Service & Support

FAQs

Q: How do I set or reset my “Set-Your-Own” combination lock model M175XDLF?

Category: "Set-Your-Own" Combination Locks Instructions

A:

View instructions on how to change/reset the combination for M175XDLF Combination Lock.

Note: Once the lock is set, there is no way to open it without the combination. Please make sure you record your NEW combination in a safe place.

Store your combination at www.masterlockvault.com - a free service from Master Lock! The Master Lock Vault provides a safe & convenient place to store all of your confidential data for quick & easy access from your PC, iPhone, or any other mobile devices!

Q: I lost the keys for my padlock. Is it possible to obtain new keys?

Category: Lost Keys & Key Replacement

A:

It may be possible to obtain replacement keys for your padlock only if you know the key number. The key number is stamped on the original keys provided with your lock. If you do not know the key number, it is possible to obtain additional keys from a locksmith who can impression your lock. If you do know the key number, go to a locksmith or local hardware store to order keys. Please note that the locksmith will charge you a fee for this service. Not all Locksmiths, Hardware Stores or Home Centers offer this service; please phone ahead.

Q: I've lost the reset tool for changing the combination on my resettable lock model 175, 176, 177, or 178. How can I get a new one?

Category: Lost Combinations

A:

Contact your local hardware store or locksmith. (Master Lock's part number for the reset tool is K175).

Q: I replaced the battery in my lock. Why does the app still show the low battery icon?

Category: Bluetooth Padlocks for Business

A:

After installing a new battery, the low battery icon will no longer display in the app, after the app and the lock communicate with each other. However, it will take 2 to 24 hours on the Indoor Padlock (4400), and 2 to 72 hours on the Outdoor Padlock (4401), for the yellow LED to stop displaying on the lock itself.

Q: Can I order Master Locks with the same combination?

Category: How to Find or Buy Master Lock Products

A:

It is possible to order our standard black dial combination padlock (model # 1500) to match an existing combination lock. Take your lock to a hardware store (Ace, True Value, Home Depot, Lowe's, HWI, Do-It-Best) or locksmith that already sells Master Lock products. Ask them to special order the product with the same serial number that is on your existing combination lock. They may charge you extra for this service.

Q: How do I open a Titanium Series combination padlock model #2050XD or 2051XD?

Category: Lost Combinations

A:

  1. Turn the dial 3 times to the right and stop on the first number of the sequence
  2. Turn the dial to the left, pass the second number of the sequence and stop on it the second time around
  3. Turn the dial to the right and stop on the third number of the sequence
  4. Push the button while pulling the shackle

Q: Can I unlock the padlock without the app?

Category: Bluetooth Padlocks for Business

A:

The app is only required when you want to use your Bluetooth Smart-enabled device to unlock the lock. The lock can be unlocked without the app by entering the Primary Code, the current Temporary Code or the Backup Master Code on the lock keypad.

Q: My key no longer turns, what can I do?

Category: Defective or Non-Functioning Locks

A:

Lubricate your locks with Master Lock recommended lock lubricant 2300D and 2311. View proper care and service of Master Lock Products.

Q: What is the dialing sequence to open a standard combination lock?

Category: Lost Combinations

A:

Please follow the steps outlined below:

  1. Turn the dial 3 times to the right and stop on the first number of the sequence.
  2. Turn the dial to the left, pass the first number of the sequence and stop on the second number.
  3. Turn the dial to the right and stop on the third number of the sequence.
  4. Pull up on the shackle.

Q: How do I update the firmware on my Bluetooth Padlock when using the Master Lock Vault Enterprise platform?

Category: Bluetooth Padlocks for Business

A:

The app will notify you that a firmware update is required. Firmware updates require you to remain within Bluetooth range of the lock throughout the process. Select OK and allow the app to update the firmware. The app will update you once the firmware update is complete.

Q: How do I locate the preset combination for the 1500iD and then reset the combination?

Category: "Set-Your-Own" Combination Locks Instructions

A:

Click on the PDF for instructions:

Note: Once the lock is set, there is no way to open it without the combination. Please make sure you record your new combination in a safe place.

Store your combination at www.masterlockvault.com - a free service from Master Lock! The Master Lock Vault provides a safe & convenient place to store all of your confidential data for quick & easy access from your PC, iPhone, or any other mobile devices!

Q: What battery does the 4400 series use?

Category:

A: The 4400 series comes with an installed CR2450 lithium button cell battery.

Q: How can I obtain a Laser Engraving Order Form for your ProSeries® Aluminum, Solid Brass, Weather Tough or Shrouded padlocks?

Category: More Information on Master Lock Products

A:

View form for the ProSeries® Aluminum & Solid Brass Padlocks Laser Engraving Form and view form for the Pro Series® WeatherTough/Shrouded Padlocks Laser Engraving Form.

Q: Can I unlock the padlock without the app?

Category:

A: The app is only required when you want to use your Bluetooth Smart-enabled device to unlock the lock. The lock can be unlocked without the app by entering the Primary Code, the current Temporary Code or the Backup Master Code on the lock keypad.

Q: How do I add, change or delete a code on my dialSpeed electronic combination lock?

Category: More Information on Master Lock Products

A:

View instructions on how to add, change or delete a code on your 1500eDBX dialSpeed electronic combination lock.

Q: How do I open or reset my TSA Approved Master Lock Travel Sentry Certified lock Model # 4680DBLK or # 4680DNKL?

Category: "Set-Your-Own" Combination Locks Instructions

A:

View instructions on how to change/reset the combination for your TSA Approved Master Travel Sentry™ Certified lock.

Note: Once the lock is set, there is no way to open it without the combination. Please make sure you record your NEW combination in a safe place.

Store your combination at www.masterlockvault.com - a FREE service from Master Lock! The Master Lock Vault provides a safe & convenient place to store all of your confidential data for quick & easy access from your PC, iPhone, or any other mobile devices!

Q: Why does my Bluetooth Padlock not seem to be functioning properly?

Category: Bluetooth Padlocks for Business

A:

Check to see if the firmware on your Padlock or Lock Box is up to date:

  1. Sign into your Master Lock Vault eLocks account
  2. Select your lock from the “Locks list”
  3. Select ”Manage Locks”
  4. Select the Gear icon in the top right corner
  5. Select “About this Lock”
  6. If a firmware update is available, you will see the message “There is a firmware update available!”
  7. Press the “Download and Install” button
  8. Press the “Install Update” button
  9. Make sure the lock is awake and remain within 2 feet of it while the update installs
  10. You will be notified when the update has successfully completed

 

Q: How do I use the battery jump slot on my dialSpeed electronic combination lock?

Category: More Information on Master Lock Products

A:

View instructions on how to use the battery jump slot on your 1500eDBX dialSpeed electronic combination lock.

Q: How do I obtain the Activation Code for my Bluetooth Smart 4400 or 4401 padlock?

Category: Bluetooth Padlocks for Business

A:

You can obtain the Activation Code through one of the following options:

1) Visit a Master Lock distributor/retailer

  • Bring the lock to a Master Lock distributor or retailer. The lock must not be attached to anything.
  • Ask the distributor or retailer to contact Master Lock for the Activation Code on your behalf using the Lock/Device ID which is engraved on the back of the lock and noted in the app under About This Lock as "Device". The Lock/Device ID starts with the letter A and is followed by 5 numbers or letters. US distributors may call 1-800-308-9244. Canadian distributors may call 1-800-227-9599.
  • Please note that although Master Lock does not charge for this service, some distributors or retailers may charge a fee.

– OR –

2) Submit an Activation Code Retrieval Form

  • Print out the Activation Code Request Form from a Printer Friendly Page or download the Bluetooth Activation Request Form.
  • Have your Activation Code Request Form notarized by a Notary Public to prove you are the owner of the lock. You can include up to 6 Activation Codes on one notarized form.
    *Note for inmates at a correctional facility: In addition to the Activation Code Request Form, you must submit your request on official prison facility letterhead. In lieu of notarization, the Activation Code Retrieval Form must be signed by a prison facility official.
     
  • Mail your form to:
    Master Lock Company
    Bluetooth Smart Padlock Activation Code Request
    6744 S Howell Avenue
    Oak Creek WI 53154
  • Once the request is received, your Activation Code will arrive in approximately 1-2 weeks (if selecting mail as the delivery method.)

Q: What if my phone battery dies?

Category:

A: If the phone battery dies, the lock or lock box can be unlocked by entering the Primary Code, the current Temporary Code or the Backup Master Code on the lock keypad.

Q: How do I change the combination on a "Set-Your-Own" combination lock model #653D?

Category: "Set-Your-Own" Combination Locks Instructions

A:

Here are the instructions for changing the combination on you model 653D lock. This lock is preset at the factory to operate at 0-0-0-0.

  1. With dials at 0-0-0-0, pull out the shackle
  2. Turn shackle counterclockwise 90 degree (1/4 turn)
  3. Continue pressing shackle down and turn another 90 degree (1/4 turn)
  4. Set the dials to your own combination
  5. Turn shackle clockwise back to the original 90 degree position, lift and return shackle to closed position

Note: Be sure to record your NEW combination as you are the only one that knows it!

Store your combination at www.masterlockvault.com - a FREE service from Master Lock! The Master Lock Vault provides a safe & convenient place to store all of your confidential data for quick & easy access from your PC, iPhone, or any other mobile devices!

Note: The lock may only be reset when it is in the open position. If you do not recall the combination the lock is set to, you will not be able to reset the combination.

Q: My locks freeze in the winter. What can I do?

Category: Defective or Non-Functioning Locks

A:

Lubricate your locks with Master Lock recommended lock lubricant 2300D and 2311. Master Lock’s lock lubricant 2300D and 2311 is specially formulated to not only prevent your locks from corroding, but the formula also prevents moisture from condensing inside the lock, which greatly reduces the likelihood your lock will freeze due to cold weather. View proper care and service of Master Lock Products.

Q: How can I fix a Master Lock padlock that only opens occasionally or is difficult to open?

Category: Defective or Non-Functioning Locks

A:

Watch our lock maintenance video or view our Care & Service guide. If your lock still does not function properly, it may be defective. Refer to our Warranty Information to find out how to obtain a replacement lock.

Q: I replaced the battery in my lock. Why does the app still show the low battery icon?

Category:

A: After installing a new battery, the low battery icon will no longer display in the app, after the app and the lock communicate with each other. However, it will take 2 to 24 hours on the Indoor Padlock (4400), and 2 to 72 hours on the Outdoor Padlock (4401), for the yellow LED to stop displaying on the lock itself.

Q: How can I get a new key for my lock if the locksmith or hardware store could not find a replacement?

Category: Lost Keys & Key Replacement

A:

It is not always possible to get a replacement key for every model of lock. If your hardware store can not get one for you, please check with a local locksmith. If they are also unable to get a replacement, you may have to purchase a new lock.

Q: How do I change the combination on a "Set-Your-Own" combination lock model 1520D, 1523D, 1524D, or 1534D?

Category: "Set-Your-Own" Combination Locks Instructions

A:

Below are instructions for changing the combination on your 1523D/1524D/1534D/1534DBBR/1534DWHT/1534DBLU/1534DBLK/1534DPNK combination lock:

  1. Open lock and withdraw the shackle.
  2. Pull spring loaded metal end cap off.
  3. Remove all 4 or 5 combination wheels.
  4. IMPORTANT: Make sure the red marks remain aligned with Master logo. Install wheels so your desired combination aligns with the Master logo.
  5. Snap metal end cap back into place. (Note: If end cap will not mount properly, check wheels to make sure they are right side up.)
  6. Close shackle and scramble wheels to lock.

Note: Please secure your NEW combination in a safe place since you are the only one who knows what it is!

Store your combination at www.masterlockvault.com - a FREE service from Master Lock! The Master Lock Vault provides a safe & convenient place to store all of your confidential data for quick & easy access from your PC, iPhone, or any other mobile devices!

Q: What if my phone is lost or stolen? What can I do?

Category: Bluetooth Lock Boxes for Business

A:

Reset Keys allows the lock box owner to revoke all Bluetooth® access to the lock, including their own. The owner and all guests will receive updated Bluetooth® credentials on their mobile devices.

LOST / STOLEN DEVICE NOTE! The owner of a lost or stolen mobile device should first go to the MasterLockVault.com web site and change their username and passcode.
To Reset Keys, the lock box owner must:
1. Make sure that the owner's device that is synced to the lock is within Bluetooth® range of the lock box(Reset Keys cannot be performed remotely).
2. Select the Appropriate padlock or lock box from the LOCKS list.
3. Touch MANAGE LOCK in the upper right corner. Enter your passcode, if prompted.
4. Touch the SETTINGS icon in the upper right corner.
5. Touch RESET KEYS.
6. Follow any additional instructions in the APP to save the changes to your lock box. This step must be completed for each lock box the lost or stolen device had access to.

Q: How do I set or reset a Master Lock combination padlock that has a resettable “Set-Your-Own” combination? I would like to reset the lock to a different combination, but have lost the instructions for this. Can you help me?

Category: "Set-Your-Own" Combination Locks Instructions

A:

Click on the PDF below that matches your lock model number for instructions on how to change/reset the combination:

Note: Once the lock is set, there is no way to open it without the combination. Please make sure you record your new combination in a safe place.

Store your combination at www.masterlockvault.com - a free service from Master Lock! The Master Lock Vault provides a safe & convenient place to store all of your confidential data for quick & easy access from your PC, iPhone, or any other mobile devices!

Q: How do I obtain the Activation Code for my Bluetooth Smart 4400 or 4401 padlocks?

Category: Lost Combinations

A:

You can obtain the Activation Code through one of the following options:

1) Visit a Master Lock distributor/retailer

  • Bring the lock to a Master Lock distributor or retailer. The lock must not be attached to anything.
  • Ask the distributor or retailer to contact Master Lock for the Activation Code on your behalf using the Lock/Device ID which is engraved on the back of the lock and noted in the app under About This Lock as "Device". The Lock/Device ID starts with the letter A and is followed by 5 numbers or letters. US distributors may call 1-800-308-9244. Canadian distributors may call 1-800-227-9599.
  • Please note that although Master Lock does not charge for this service, some distributors or retailers may charge a fee.

– OR –

2) Submit an Activation Code Retrieval Form

  • Print out the Activation Code Request Form from a Printer Friendly Page or download the Bluetooth Activation Request Form.
  • Have your Activation Code Request Form notarized by a Notary Public to prove you are the owner of the lock. You can include up to 6 Activation Codes on one notarized form.
    *Note for inmates at a correctional facility: In addition to the Activation Code Request Form, you must submit your request on official prison facility letterhead. In lieu of notarization, the Activation Code Retrieval Form must be signed by a prison facility official.
     
  • Mail your form to:
    Master Lock Company, LLC
    Bluetooth Smart Padlock Activation Code Request
    6744 S Howell Avenue
    Oak Creek, WI 53154
  • Once the request is received, your Activation Code will arrive in approximately 1-2 weeks (if selecting mail as the delivery method.)

Q: How do I obtain the Activation Code for my Bluetooth 4400 or 4401 padlock?

Category:

A:

To locate the lock's Activation Code on the instruction sheet included in the lock packaging:

  1. On the front of the package, cut through the two plastic ribs behind the lock's shackle and remove the lock from the package.
  2. Remove the folded instruction sheet from behind the shackle.
    Open Icon
  3. Locate the Activation Code at the top left corner of the instruction sheet and enter it as instructed in the app.
    Activation Code Icon

Note: The Activation Code may include the numbers 1 or 0 but will not include the letters I or O.

Q: What if my phone is lost or stolen? What can I do?

Category:

A:

Reset Keys allows the lock box owner to revoke all Bluetooth® access to the lock, including their own. The owner and all guests will receive updated Bluetooth® credentials on their mobile devices.

LOST / STOLEN DEVICE NOTE! The owner of a lost or stolen mobile device should first go to the MasterLockVault.com web site and change their username and passcode.
To Reset Keys, the lock box owner must:
1. Make sure that the owner's device that is synced to the lock is within Bluetooth® range of the lock box(Reset Keys cannot be performed remotely).
2. Select the Appropriate padlock or lock box from the LOCKS list.
3. Touch MANAGE LOCK in the upper right corner. Enter your passcode, if prompted.
4. Touch the SETTINGS icon in the upper right corner.
5. Touch RESET KEYS.
6. Follow any additional instructions in the APP to save the changes to your lock box. This step must be completed for each lock box the lost or stolen device had access to.

Q: Where can I buy a custom-built padlock for my unique requirements?

Category: How to Find or Buy Master Lock Products

A:

Our Build-Your-Lock tool tool helps you select a padlock and then tailor it to the needs of your specific application. It includes options for special keying, engraving/special marking, shackle lengths – and many, many others. When completed, we’ll help you find a distributor who can give you an accurate price quote and follow up on your order.

Q: How do I change the battery on my dialSpeed electronic combination lock?

Category: More Information on Master Lock Products

A:

View instructions on how to change the battery on your 1500eDBX dialSpeed electronic combination lock.

Q: Does Master Lock sell plastic covers for their padlocks?

Category: More Information on Master Lock Products

A:

No, however you may be able to buy them online. Try using a search engine to locate a retailer.

Q: What battery does the 4401 series use?

Category:

A: The 4401 series comes with an installed CR2 lithium photo battery.

Q: How do I change the combination on a "Set-Your-Own" combination lock model #643DWD?

Category: "Set-Your-Own" Combination Locks Instructions

A:

Here are the instructions for changing the combination on your model 643DWD lock. This lock is preset at the factory to operate at P-L-A-Y.

  1. Decide on your new 4 letter combination - choose from suggestions on reverse side or create your own.
  2. With dials at P-L-A-Y (middle of letters should be aligned with red stripe), pull out the shackle.
  3. Turn shackle 90 degree (1/4 turn) so notch on shackle is aligned with notch in lock body.
  4. Press and hold the shackle down.
  5. Set the dials to your desired combination by lining up middle of letters with red stripe.
  6. Lift shackle, return to closed position and hold shackle down while scrambling letters to lock.
  7. To re-open lock, set dials to your combination and lift shackle.

Note: Be sure to record your NEW combination as you are the only one that knows it!

Store your combination at www.masterlockvault.com - a FREE service from Master Lock! The Master Lock Vault provides a safe & convenient place to store all of your confidential data for quick & easy access from your PC, iPhone, or any other mobile devices!

Note: The lock may only be reset when it is in the open position. If you do not recall the combination the lock is set to, you will not be able to reset the combination.

Q: Can I unlock the padlock without the Master Lock Vault Enterprise app?

Category: Bluetooth Padlocks for Business

A:

The app is only required when you want to use your Bluetooth Smart-enabled device to unlock the lock. The lock can be unlocked without the app by entering the Primary Code or the current Temporary Code on the lock keypad.

Q: I have a combination lock that has a keyway in the front or the back. Is it possible to get a key for my lock?

Category: Lost Keys & Key Replacement

A:

These locks are registered to a particular business or school and the keys are reserved for their use only.

Yes, it is possible to purchase up to 12 additional keys if you are the registered end user (i.e. a school or institution). Send us a fax on your official letterhead requesting the keys you need. Be sure to include the exact key numbers and any information that will help us find your user registration. The cost is $8.44 per key plus a $5.00 flat fee for shipping, regardless of the number of keys being ordered. Fax your request to 1-800-308-9245, or email to orders@mlock.com to the attention of Customer Service/Registered Keys.

A remittance request will accompany your keys. Payment can be made by check or money order (at this time, credit card payments are not accepted).

Q: How can I obtain a Laser Engraving Order Form for your model S31, S33, 406, 410, 411 and S6835-6835 Safety Padlocks?

Category: More Information on Master Lock Products

Q: I cannot find a Government NSN what should I do?

Category: How to Find or Buy Master Lock Products

A:

The number of Government NSNs that pertained to American Lock solid body padlocks have been placed on the Federal Procurement List and are available directly from LC Industries. Contact Master Lock Customer Service for clarification on any NSN. NSNs on the FPL are available directly through LC Industries located in Raleigh NC. LC Industries can be contacted at: https://www.lcindustries.com/contact-us/.

Q: What phones are the padlocks compatible with?

Category: Bluetooth Padlocks for Business

A:

Compatible Devices

The Bluetooth® locks are designed to work with devices that are built to Bluetooth® v4.0 (or higher) specifications and implement the capability to communicate with Bluetooth® peripherals. iOS and Android platforms are currently supported.

iOS Version: 10 or later. Device: 6 or later.
Android Version: 5 or later. Device: Various.
Web Management: Chrome, Safari, Firefox, Internet Explorer (Edge).

You can determine your device's OS version in your phone's settings.

Q: Why does my Bluetooth Padlock not seem to be functioning properly?

Category:

A:

Check to see if the firmware on your Padlock or Lock Box is up to date:

  1. Sign into your Master Lock Vault eLocks account
  2. Select your lock from the “Locks list”
  3. Select ”Manage Locks”
  4. Select the Gear icon in the top right corner
  5. Select “About this Lock”
  6. If a firmware update is available, you will see the message “There is a firmware update available!”
  7. Press the “Download and Install” button
  8. Press the “Install Update” button
  9. Make sure the lock is awake and remain within 2 feet of it while the update installs
  10. You will be notified when the update has successfully completed

 

Q: What is the Product Warranty for the Master Lock Bluetooth padlocks and Bluetooth Safe Space lock boxes?

Category:

A: The Master Lock Bluetooth padlocks and Bluetooth Safe Space lock boxes have a Limited One (1) Year Warranty. Visit masterlock.com for complete warranty details.

Q: What phones are the locks and lock boxes compatible with?

Category:

A: The Bluetooth padlocks and Bluetooth Safe Space lock boxes are designed to work with devices that are built to Bluetooth v4.0 (or higher) specifications and implement the capability to communicate with Bluetooth Smart peripherals. iOS and Android platforms are currently supported. See Compatible Devices.

Q: I've forgotten the combination to my standard dial combination lock. How do I obtain the combination for personal use?

Category: Lost Combinations

A:

A) My lock does not have a serial number:

To provide enhanced long–term security, Master Lock has discontinued imprinting a serial number on the lock body on combination locks sold through retail locations. Unfortunately, we are unable to provide combinations for non–serialized locks. Please see examples of a serial number if you are unsure if your lock features one.

B) My lock has a serial number:

Please see examples of a serial number if you are unsure if your lock features one.

Choose from one of the two options below to obtain your combination:

Note: Due to increased security concerns nationwide, Master Lock recognizes the heightened need for additional safety measures. We no longer provide lock combinations in response to phone, fax, or email requests.

1) Visit a Master Lock Distributor/Retailer

  • Bring the lock to a Master Lock distributor or retailer. The lock must not be attached to anything. Important: If the lock is not brought to the retailer or distributor, we will not release the combination.
  • Ask the distributor or retailer to contact Master Lock for the combination on your behalf and we will validate ownership through them. US distributors may call 1-800-308-9244. Canadian distributors may call 1-800-227-9599.
  • Please note that although Master Lock does not charge for this service, some distributors or retailers may charge a fee.

- OR -

2) Submit a Lost Combination Form

  • Confirm that your lock features a serial number prior to submitting a Lost Combination Form. Please see examples of a serial number if you are unsure if your lock features one.
  • Print out the Lost Combination Form from a Printer Friendly Page or download the PDF file.
  • Have your Lost Combination Form notarized by a Notary Public to prove you are the owner of the lock. You can include up to 6 combinations on one notarized form.
    • Note for inmates at a correctional facility: In addition to the Lost Combination Form, you must submit your request on official prison facility letterhead. In lieu of notarization, the Lost Combination Form must be signed by a prison facility official.
  • Submit your form to:
    Master Lock Warehouse
    24 North Free Port Drive
    Nogales, AZ 85621
  • Once the request is received, your combination will arrive in approximately 4-6 weeks.

Q: How do I find the Activation Code in the packaging?

Category:

A:

To locate the lock's Activation Code on the instruction sheet included in the lock packaging:

  1. On the front of the package, cut through the two plastic ribs behind the lock's shackle and remove the lock from the package.
  2. Remove the folded instruction sheet from behind the shackle.
    Open Icon
  3. Locate the Activation Code at the top left corner of the instruction sheet and enter it as instructed in the app.
    Activation Code Icon

Q: Where can I find the app?

Category:

A:

The app is available in the Apple App Store and the Google Play Store. Click below or search for "Master Lock Vault eLocks" in the app stores.


Download on the Apple App Store Android App on Google Play

Q: What are some suggested password combinations for "Set-Your-Own" combination lock model #643DWD and #4691DWD?

Category: Lost Combinations

A: Some of password combination suggestions can be found in within the 643DWD instructions.

Q: How do I change the combination on a "Set-Your-Own" combination lock model #643D?

Category: "Set-Your-Own" Combination Locks Instructions

A:

Here are the instructions for changing the combination on your model 643D lock. This lock is preset at the factory to operate at 0-0-0-0.

  1. With dials at 0-0-0-0, pull out the shackle.
  2. Turn shackle 90 degree (1/4 turn) so notch on shackle is aligned with notch in lock body.
  3. Press and hold the shackle down.
  4. Set the dials to your own combination by lining up middle of numbers with red stripe.
  5. Lift and return the shackle to closed position.
  6. Scramble the dials to lock.

Note: Be sure to record your NEW combination as you are the only one that knows it!

Store your combination at www.masterlockvault.com - a FREE service from Master Lock! The Master Lock Vault provides a safe & convenient place to store all of your confidential data for quick & easy access from your PC, iPhone, or any other mobile devices!

Note: The lock may only be reset when it is in the open position. If you do not recall the combination the lock is set to, you will not be able to reset the combination.

Q: How do I set or reset my "Set-Your-Own" combination lock model 179LH?

Category: "Set-Your-Own" Combination Locks Instructions

A:

Here are the instructions on how to change the combination to your model #179 lock:

  • To Open: Turn each digit to "0" and depress shackle.
  • To Lock: Depress Shackle. Scramble digits.

Important: When changing to new combination, dial setting must remain on old combination!

Before leaving the factory, your combination padlock has been set to open at 0-0-0-0.

To Reset a New Combination:

  • Open Lock and expose shackle hole.
  • Leaving digit wheels on old combination, insert attached combination changing tool and press it as far as it will go. turn the combination tool 180 degrees until it is aiming at the shackle. Warning: If the combination changing tool is not fully depressed, a lost combination will result!
  • Set digits to your own personal combination and make sure the numbers are perfectly in line with the indicator.
  • Return combination changing tool 180 degrees and remove.
  • Depress shackle. If shackle cannot return to locking position, the change of combination is not successful. Adjust the dials so that they are lined up exactly with the indicator.
  • Spin the dials.

Note: Please make sure you record your NEW combination in a safe place since you are the only one that knows it!

Store your combination at www.masterlockvault.com - a free service from Master Lock! The Master Lock Vault provides a safe & convenient place to store all of your confidential data for quick & easy access from your PC, iPhone, or any other mobile devices!

Q: Can Master Lock reset my "Set-Your-Own" combination lock and send it back to me?

Category: Lost Combinations

A:

Unfortunately, your lock is a "set-your-own" combination lock. Once you have set the combination, we cannot reset it for you!

Q: Why does my Bluetooth Lock Box not seem to be functioning properly?

Category: Bluetooth Lock Boxes for Business

A:

Check to see if the firmware on your Padlock or Lock Box is up to date:

  1. Sign into your Master Lock Vault eLocks account
  2. Select your lock from the “Locks list”
  3. Select ”Manage Locks”
  4. Select the Gear icon in the top right corner
  5. Select “About this Lock”
  6. If a firmware update is available, you will see the message “There is a firmware update available!”
  7. Press the “Download and Install” button
  8. Press the “Install Update” button
  9. Make sure the lock is awake and remain within 2 feet of it while the update installs
  10. You will be notified when the update has successfully completed

 

Q: My lock does not function. Is it covered under warranty? Can the replacement lock be keyed and/or combined to the key or combination I currently have? What happens if the battery fails?

Category: Warranty Information

A:

Master Lock offers a warranty on its padlocks, including key, combination, and electronic locks (including the battery) and the length of warranty is determined by the product number of your lock. (See limited lifetime warranty section below). Replacements to the same key, combinations, or electronic code are determined by the model lock being replaced. Customer Service will be able to verify that information at the time you make your warranty claim.

Limited Lifetime Warranty

If this product or any part of the product fails due to a defect in materials or workmanship at any time during the life of the product, Master Lock Company LLC (“Master Lock”) will repair or replace the product or part free of charge. Simply contact Master Lock at www.masterlock.com or 1.800.464.2088 for instructions on obtaining repair or replacement. Canadian customers please call 1.800.227.9599. Return of the defective product or part at the customer’s expense, along with proof of purchase, may be required. This limited warranty applies only to defects in materials and workmanship, and does not cover products which have been abused, altered, damaged, misused, cut or excessively worn. THIS WARRANTY IS LIMITED TO REPAIR OR REPLACEMENT ONLY. This limited warranty does not cover labor for removing, reinstalling or refinishing the Product or part, or other materials removed, reinstalled or refinished in order to repair or replace the Product or part. TO THE EXTENT PERMITTED BY LAW, MASTER LOCK DISCLAIMS ALL OTHER IMPLIED OR EXPRESS WARRANTIES INCLUDING ALL WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE. TO THE EXTENT THAT ANY IMPLIED WARRANTIES MAY NONETHELESS EXIST BY OPERATION OF LAW, SUCH WARRANTIES ARE LIMITED TO THE DURATION PROVIDED BY LAW.

LIMITATION OF LIABILITY: This limited warranty is your sole and exclusive remedy and MASTER LOCK shall not be liable for any damages, whether direct, indirect, incidental, special, consequential, exemplary, or otherwise, including property damage, lost revenues and lost profits, arising out of any theory of recovery, including statutory, contract or tort. Notwithstanding the term of any limited or implied warranty, or in the event that this limited warranty fails of its essential purpose, in no event will MASTER LOCK’S entire liability exceed the purchase price of this product. Some states and provinces do not allow the exclusion or limitation of incidental or consequential damages so the above limitations or exclusions may not apply to you. Some states and provinces do not allow limitation on how long a limited warranty lasts, so the above limitation may not apply to you. This limited warranty gives you specific legal rights, and you may also have other rights which vary from state to state and province to province.

Note: If you are an inmate in a Correctional Facility, the request for your replacement or replacements must be mailed. Click here for the warranty returns form which includes mailing instructions. In addition to the form, you must also include a letter on official prison letterhead and signed by a warden or prison official. The letter must include your lock model number, serial number (if applicable), and control key number. Please also note that your replacement lock will be shipped via parcel post.

Note: Any warranty stated on any packaging or website associated with this product is not valid in Australia. Product sold in Australia is governed by the consumer guarantees contained under the Australian Consumer Law.

Q: How do I retrieve my Backup Master Code?

Category: More Information on Master Lock Products

A:

View instructions on how to retrieve your Backup Master Code for the 1500eDBX dialSpeed electronic combination lock.

Q: How do I update the firmware on my Bluetooth Padlock when using the Master Lock Vault eLocks platform?

Category:

A:

Please follow these steps:

  1. Sign into your Master Lock Vault eLocks account
  2. Select your lock from the "Locks list"
  3. Select "Manage Locks"
  4. Select the Gear icon in the top right corner
  5. Select "About this Lock"
  6. Press the "Download and Install" button
  7. Press the "Install Update" button
  8. Make sure the lock is awake and remain within 2 feet of it while the update installs
  9. You will be notified when the update has successfully completed

 

Q: Why does my Bluetooth Lock Box not seem to be functioning properly?

Category:

A:

Check to see if the firmware on your Padlock or Lock Box is up to date:

  1. Sign into your Master Lock Vault eLocks account
  2. Select your lock from the “Locks list”
  3. Select ”Manage Locks”
  4. Select the Gear icon in the top right corner
  5. Select “About this Lock”
  6. If a firmware update is available, you will see the message “There is a firmware update available!”
  7. Press the “Download and Install” button
  8. Press the “Install Update” button
  9. Make sure the lock is awake and remain within 2 feet of it while the update installs
  10. You will be notified when the update has successfully completed

 

Q: How can I obtain my lost combination when my lock is attached to my locker, bike, cabinet, etc.?

Category: Lost Combinations

A:

For security reasons Master Lock will not provide lost combinations if the lock is attached to anything.

Q: How can I fix a resettable combination lock that sticks from time to time?

Category: Defective or Non-Functioning Locks

A:

Lubricate your locks with Master Lock recommended lock lubricant 2300D and 2311. Master Lock’s lock lubricant 2300D and 2311 is specially formulated to not only prevent your locks from corroding, but the formula also prevents moisture from condensing inside the lock, which greatly reduces the likelihood your lock will freeze due to cold weather. View proper care and service of Master Lock Products.

Q: My lock was difficult to open, and it had to be cut off. Will Master Lock replace my lock?

Category: Defective or Non-Functioning Locks

A:

All Master Lock padlocks are warranted to be free from mechanical defects for the life of the product. If a mechanical defect occurs, we will replace it free of charge. View instructions for obtaining a replacement lock.

Q: How do I set or reset the combination on a "Set-Your-Own" combination padlock model 175, 176, 177 or 178?

Category: "Set-Your-Own" Combination Locks Instructions

A:

Models #175, 176, 177 and 178:

  • Open lock with the factory set or previously set combination. The lock must be set to the current combination, or you cannot reset it. Note: the shackle must be in the open position to reset the combination.
  • Insert reset tool (enclosed in package) in hole on side of lock.
  • Push reset tool in and turn 90 degrees (in either direction). Reset tool automatically stays in this position.
  • Set wheels to desired combination.
  • Turn and remove reset tool. Lock is now set to new combination.
  • Record your new combination in a safe place.

Store your combination at www.masterlockvault.com - a FREE service from Master Lock! The Master Lock Vault provides a safe & convenient place to store all of your confidential data for quick & easy access from your PC, iPhone, or any other mobile devices!

How-To & Instructional Videos

1500 Combination Locks - Training

1500eDBX dialSpeed Backup Master Code - Training

1500eDBX dialSpeed Introduction - Informational

1500eDBX dialSpeed QuickStart - Training

1500id Combination Lock - Training

1500id Speed Dial Combo Locks - Informational

1502/1525 Blockguard Anti-Shim Locks - Informational

1525EZRC Simple Combo Lock - Informational

1534 Password Combination Lock - Training

1534D Password Lock - Informational

1535DWD/1535D Set-Your-Own Combination Lock - Training

1588 Combination Locks - Training

1590D Set-Your-Own Combination Lock - Informational

1590D Set-Your-Own Combination Lock - Training

175/176/177/178/M176 High Security Combination Locks - Training

2300D - Maintaining A Master Lock Padlock - Informational

2650ADA Keyed Lock How to Open - Training

4400D - Replace Your Battery Indoor Model 4400D - Training

4400D & 4400DLH Bluetooth Padlocks: Get Started - Training

4400D & 4401DLH - Register and Add Your Lock - Training

4401DLH - Replace Your Battery Outdoor Model 4401DLH - Training

4680DBLK/4680DNKL TSA-Accepted Padlocks - Training

4684T TSA-Accepted Padlocks - Training

4688 TSA-Accepted Padlocks - Training

4691DWD TSA Password Lock - Informational

4691DWD TSA-Accepted Password Combinaton Lock - Training

4692D TSA-Accepted Padlocks - Training

4693D TSA-Accepted Padlocks - Training

4696D/4696DWD TSA-Accepted Padlocks - Training

4697D/4697DWD TSA-Accepted Padlocks - Training

5440D/5441D: Add Guest - Training

5440D/5441D: Register - Training

5440D/5441D: Send Temporary Code - Training

5440D: Operation Instructions - Training

5441D: How To Install - Training

643DWD Password Combination Lock - Training

643DWD Password Lock - Informational

8401/8402/8405/8406/8408/8412/8413/8415/8417/8418/8428/8430/8433 Python Adjustable Cable Locks - Informational

American Lock A3650 Series Key-Retaining Feature

American Lock A3650 Series Quick-Change Shackle Feature

Bluetooth® Smart Padlocks - Informational

Guardian Extreme™ Signs and Tags

Keyed Alike - What Does it Mean?

M175 Set-Your-Own Combination Lock - Training

M532 Rekeyable Recodeable Padlock - Training

Master Lock Lockout/Tagout Video

Master Lock S125 – Padlock Caddy

Master Lock S2394 – Mini Circuit Breaker Lockout

Master Lock S3068 – Seal Tight™ Handle-on Ball Valve Lockout

Master Lock S3081 – Adjustable Ball Valve Lockout

Master Lock S3900 – Pneumatic Lockout

Master Lock S3910 – Pressurized Gas Valve Lockout

Master Lock Safety 487 and 488 – Rotating Large Electrical Plug Lockout

Master Lock Safety S1800, S180 and S1900 – Deluxe Lockout Station

Password Combo Locks - Informational

S3650 - Group Lock Box with Wall Mounting Bracket - Informational

Downloads & Related Information

1500eXD dialSpeed User Manual

1500iD Speed Dial Instructions

1535D Instructions

1535DWD Instructions

174SSD Combination Reset Instruction Sheet

406 & 410 Series Laser Engraving Form

4400D and 4401DLH Instructions

4684T Instruction Sheet

4688D Instruction Sheet

4692D Instruction Sheet

4696D Instruction Sheet

4696DWD Instruction Sheet

4697D Instruction Sheet

4697DWD Instruction Sheet

480 to 485 Gate Valve Devices Installation Instructions

5440D and 5441D Instructions

6121 ProSeries® Weather Tough® Padlocks Sell Sheet

6835 Retirement Information

7000-0058 878 and 975 Padlock Sell Sheet

7000-0432 175 and 975 Laser Engraving Form

7000-0588 ProSeries® Resettable Combo Locks Laser Engraving Form

7000-0590 ProSeries® Solid Brass and Aluminum Padlocks Custom Laser Engraving Form

7000-0593 ProSeries® Weather Tough® Custom Laser Engraving Form

7000-0618 Commercial Magnum Sell Sheet

7000-0622 Commercial Magnum Laser Engraving Form

875 and 975 Combination Reset Instruction Sheet

A1100/S1100 Series Laser Engraving Form

A1405, A3560, A3600 & A3650 Series Laser Engraving

A3570, A3700 & A3900 Series Laser Engraving

A3650 Series Sell Sheet

A3650 Series Technical Service Page

Additional Support Tools

American Lock Technical Service Manual

Architectural Specifications

Care & Service of Master Lock Padlocks

Complete School Security Sell Sheet

Custom Dial Colors (1502/1525)

Customized Logo & Color Sell Sheet

Extreme Environment Covers Sell Sheet

Government Products Catalog and Price List

How to retrieve your dialSpeed Backup Code

Installation & Maintenance

Key-in-Knob Cylinder Options

LifeGuard Keying Sell Sheet

Lockout Station Install Instructions

Miniature Circuit Breaker Lockout Install Instructions

Model 107 Cable Gun Lock Instructions

Model 99 Cable Gun Lock Instructions

New NSNs per DLA

Pro Series Resettable Combination Locks Instructions

ProSeries® Technical Information

Rekeyable Padlock Service Procedures & Reference Charts

S-Series Padlock Sell Sheet

S2394 Miniature Circuit Breaker Lockout Sell Sheet

S30 Series Padlock Sell Sheet

S3068 Ball Valve Lockout Sell Sheet

S3500 Series Brochure

S3650 Group Lock Box Installation Instructions

S3650 Group Lock Box Laser Engraving Form

S3650 Group Lock Box Sell Sheet

S440 & S450 Sliding Safety Hasp Sell Sheet

S600 Series and 498A Group Lock Boxes Laser Engraving Form

Safety Data Sheet

Safety Data Sheet - EU

Safety Data Sheet - OSHA

Safety Master Key Systems

Safety Planogram Sell Sheet

Seal Tight Ball Valve Lockout Sell Sheet

Small Format Interchangeable Core Options

Tips for Travelers

Videos for Product Information, User Training or Admin. Training

View additional videos on how to add/delete codes, how to change the battery & use the battery jump slot.

WeatherBuilt Padlock Instructions

What are TSA-Accepted Locks?

Customer Experiences

"I have 2 Master Locks. One for my band locker that keeps people from stealing my trumpet and one for my regular locker. I have caught 2 people trying to break open into my regular locker and 3 people at my band locker."
— Alex @ Phoenix, AZ   Full Story
"I lost the key to my Master Lock padlock keeping my flagpole lowering mechanism locked. I decided that I would go down to my local hardware store and borrow their bolt cutters. I BROKE THEIR BOLT CUTTERS trying to cut the lock! Haha! Talk about one tough lock!"
— Chris @ Council Bluffs, IA   Full Story
"I showed up at the paintball field one evening to find several .308 shells laying around. When I checked the lock, it had been shot point blank. Almost all the internal components were gone, but the lock was still locked. It took me about 30 swings with a sledge hammer to finally remove it. That lock save me about $5000 worth of equipment from being stolen. I will never trust another lock company but Master Lock."
— austin @ hays, KS   Full Story
"I recently bought a Master Lock Laminated Steel padlock due to the recent locker break ins at school, where some combination locks were broken with some kind of blunt object. They tried to smash it open with what looks like a hammer or some sort of other object. Four other lockers got broken into and stuff was stolen, but mine was the only lock that stood strong!"
— brad @ bay city, MI   Full Story
"I live on a Lake and own a boat shed for my equipment worth large amounts of money. I had a MasterLock Pro Series 6321 High security Padlock on the door, and it prevented two attempts at burglary. Thank you Master Lock!"
— Jack @ Petoskey, MI   Full Story
"Just wanted to let you know about your good locks. Two years ago we dragged this Warded Master Lock behind our travel trailer from Syracuse NY to Monticello NY on the end of a chain that we forgot to secure. We then used it the following year, it works great. Thanks"
— Richard @ Montgomery, NY   Full Story
""
— Marti @ Genesee, WI   Full Story
""
— Marti @ Genesee, WI   Full Story
"Someone tried to break in my locker while I was at a gym today. But the thief could not break my Master Lock combination padlock. Even though the padlock had been damaged heavily, it saved my stuff, including my wallet and keys, from the bad guy."
— Takayoshi @ San Pedro, CA   Full Story
"The shed was burglarized not only once but twice within one week! Although the burglars ultimately managed to enter the shed by using a crow bar to pry off the hasp, the lock fared in much better shape! I was very impressed at the inability of the burglars to pry, cut, or in any way break the lock! Fantastic product that we will recommend to anyone!"
— Judith @ McAllen, TX   Full Story
"Over 35 years ago, I was attending high school and obtained a lock for my gym locker - a simple black-faced Master Lock Combination Lock. I am amazed that for more than 35 years the lock has never failed me. You should truly be proud of the fact that a product intended for a specific purpose far exceeded that purpose and is still functioning."
— F. Michael @ Carle Place, NY   Full Story
""
— Robert @ Maitland,    Full Story
"The decks were stacked against our Master M5EURD EXCELL padlock the when at 5 AM, the security cameras picked up a team of five baddies descending on Boreham’s Kyalami Liquor Store in Gauteng, South Africa."
— Stiaan @ Cape Town,    Full Story
"We had a warded Tough Under Fire steel laminated padlock (No. 22) that we've used up at our camp. Over the years it has gotten burnt, rusted, and frozen but it held up great and still works fine."
— Kirk @ Bangor, ME   Full Story
"After over 40 years of service I will have to replace my No.5 Master Lock! I guess the pins are getting so worn I have to play with it for a few minutes to get it open."
— James @ Plattsburgh, NY   Full Story
"I bought my first Master Lock combination in 1980 for high school. For some reason the number stuck in my head and I never forgot it. It went to college next and then sat for years packed away. Now 29 years later it is used at work for my locker. I always see the new colors in the store and want to buy them, but I am true to my original black and silver that still works!"
— tamara @ new port richey, FL   Full Story
"Back in 1975, when my mom went to Cajon High School, she used a Master No. 3 padlock for her locker. Well what do you know, 33 years later I find myself at her old school, and her padlock is STILL there, battered and rusty, but still holding strong! My mom even kept the old key and decided to let me try it. 33 years of weather, vandals, custodians with bolt cutters and rust just had no effect on this lock, it popped right open! What's more, I continued to use her old padlock throughout my years at Cajon High and it NEVER let me down. I still have it now! Master sure got it right with their laminated padlocks."
— Hunter @ Phelan, CA   Full Story
"They tried to pry,cut,and hammer your #175 Lock off the door but were unsuccessful. The shackle bent out of shape but did not open. They finally gave up!"
— Pete @ Florence, SC   Full Story
"Many years ago, as a new police officer, I purchased a combination lock to secure my belongings...now, almost 34 years later, the lock works as well as it did when I bought it! Perhaps your workmanship is too good because I have never had to purchase another lock! It is truly a "lifetime" lock!!!"
— Rod @ Manhattan Beach, CA   Full Story
"One of our No. 176 locks received at least two rounds from a shotgun. We figure one round with Double 00 buck and another with bird shot. After two darn near point blank shots the lock is no longer usable via the combination or the key override. But your lock held tight!! I never thought that our locks would be put under such stress."
— Michael @ Missoula, MT   Full Story
"For school we needed a gym locker lock and I had the one where you reset the lock by moving the wheels on the red markers. At the end of the year my gym teacher said "If you don't take your locks home, we will cut them off and take what's inside the locker." Unfortunately for them, I had a Master Lock and they couldn't cut it off with bolt cutters! So they had to call me over to the school to remove the lock."
— Jonathan @ columbia, MD   Full Story
"U think a Master Lock isn't strong? Some thieves tried to drill out a lock on a gangbox at work with my tools in it one night after work. The bit had broke off while"
— John @ Baton Rouge, LA   Full Story
""
— Marti @ Genesee, WI   Full Story
"I was issued a long shackled Master Lock at the Coast Guard boot camp on Jan. 12, 1960 which was used for my seabag. I remained in the Coast Guard until Feb. 1980. The lock traveled all over the world with me and it is still being used on barn doors today."
— Jay @ Delmont, NJ   Full Story
""
— Marti @ Genesee depot, WI   Full Story
"I arrived at work Friday morning to see where a vehicle had demolished our front gate. The only thing holding our gate together was our Master Lock # 5."
— Butch @ Waco, TX   Full Story
"...as I write this,I have that lock sitting on my desk with part of the shipping container door still attached to it!!! It was so hard to open the lock that they cut the container open around it. I'm upset that I was burglarized, but smiling at the same time as I picture these fools beating on this lock till blue in the face only to have to start over with plan B. I would have paid to watch them in the middle of the California desert (115 degree heat) beating on that lock! Thanks for letting me share my story."
— JAMES @ glendale, CA   Full Story
""
— Larry @ Norcross, GA   Full Story
"I have a Master padlock that my Grandfather gave me. He told me a story about how during the Depression his father went out and bought this lock to stop a thief from stealing gas from his garage. If you ask me a lock that still works after being used for about 70 years is one lock that is Tough Under Fire!"
— Michael @ Erie, PA   Full Story
""
— Johnny @ Edina, MN   Full Story
"The Master Lock with hardened shackle is the boss in my book of the World’s Best. Just recently someone had tried to break into my work shed and they unsuccessfully used bolt cutters to cut the Master Lock. I use the 4 pack for the convenience of one key and this lock saved me THOUSANDS OF $$ in losses. Thank You Master Lock, for making me safe."
— ERIK @ BINGHAMTON, NY   Full Story
"I have 7 Master Locks all 175DLH on the gates to our property. 2 failed and your company is extending the lifetime warranty to me. THANK YOU!!!"
— Edward @ Gilroy, CA   Full Story
"There was a major break in at my Storage unit location...30 Storage units were broken into when the locks on the units were cut with a bolt cutter."
— Gary @ Marietta, GA   Full Story