Master Lock introduced the ProSeries® product line in 1992 with Weather Tough® and High Security, iron shrouded, rekeyable padlocks. Intent on providing locksmiths with greater ease and flexibility, Master Lock designed the padlocks to use standard components across the line. Since then, ProSeries® has grown to include solid body padlocks in Brass, Steel and Aluminum to further satisfy corrosion, security and safety requirements. Most recently, Master Lock has added extensive interchangeable core and door hardware cylinder options to create maximum options for padlock integration into facility padlock and door lock systems. Today, ProSeries® is the only product line available for so many different applications, making Master Lock the source for complete commercial security.

Click on the following links to download sections of the Master Lock Technical Manual:

• 6270 & 6271 Service Procedure
  (pdf, 74KB)
• Rekeyables Service Procedure
  (pdf, 55KB)
• 6230 Service Procedure (pdf, 54KB)
• Rekeyables Component Parts
  (pdf, 67KB)
• Interchangeable Core Service Procedure (pdf, 51KB)
• Interchangeable Core Component Parts (pdf, 52KB)
• Door Hardware Service Procedure
  (pdf, 58KB)
• Door Hardware Component Parts
  (pdf, 62KB)
• Laminated Rekeyables Service Procedure (pdf, 109KB)
• Python™ Cylinder Compatible Products Service Procedure
  (pdf, 176KB)
• Cylinders & Retainers (pdf, 235KB)
• Cylinder Service Procedure (pdf, 72KB)
• Keying (pdf, 456KB)
• Improved 6000 and 7000 Keyways
  (pdf, 75KB)
• Keys and Keyways (pdf, 158KB)
• Bitting Specifications Glossary
  (pdf, 45KB)
• ProSeries® Actuators, Retainers & Drivers (pdf, 109KB)
• Tools (pdf, 76KB)
• Terminology (pdf, 111KB) - Select terminology that applies to Master Lock Products. A complete listing of the locksmith glossary is available at www.locksoft.com/gloscopy.htm