Master Lock Government Locks

Government Laminated Brass Padlock

Made to Meet Exacting
U.S. Government Standards

Master Lock's high quality padlocks protect assets at government facilities throughout the world, securing high-value military property, withstanding extensive use and harsh environments, and defeating attempts to breach security.

Master Lock provides locks to every segment of the U.S. Government, including:

  • Department of Defense (DOD)
  • Military Services
  • Defense Agencies
  • General Services Administration (GSA)
  • Coast Guard

Master Lock government padlocks can be ordered by NSN or by commercial equivalent part number.

Where required, Master Lock government padlocks are manufactured to exacting U.S. Government standards CID-A-A-59486 and CID-A-A-59487. They feature a bump resistant, five-pin tumbler cylinder for more than 10,000 key changes and a dual locking mechanism for superior pry resistance. For added security, all models have non-removable keys.

BumpStop® Advanced Cylinder Technology is the default cylinder in all Master Lock Government security products.

As of July 2010, BumpStop® Advanced Cylinder Technology is included in all Master Lock Government security products to meet CID requirements. With a reverse rake tapered driver pin, high performance spring and precision tolerance chamber, our 4-,5-, and 6-pin BumpStop® products exceed the ASTM F883-09 Standard for Grade 6 lock bumping resistance. The standards are based on ASTM International testing criteria for determining a pin tumbler padlock cylinder's ability to effectively resist break-ins using lock bumping techniques. For more information, please view the BumpStop® video on the right side of the page.