Master Lock Distributor | Raptor Supplies Deutschland


Since 1921, Master Lock has been designing and manufacturing high-quality locks, padlocks and other safety products for commercial and industrial security applications. It is headquartered in Oak Creek, Wisconsin, USA. Read More




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About Master Lock

Master Lock padlock product line includes lockout padlocks, combination padlocks and keyed-alike padlocks made from high-strength steel and aluminium for all-weather protection. They offer a complete line of cable lockouts, deadbolt locks, circuit breaker lockouts, lock rings and hasps. The brand's ball valve lockouts feature aluminium / steel construction to resist corrosion and extreme temperatures. They are designed to clamp tightly on the handle stop to restrict the handle from moving. Master Lock unfilled padlock stations are safety padlock caddies to hold safety padlocks near the lockout point and ensure all isolation locations are addressed. They are capable of holding up to 12 safety padlocks.

Things To Consider

Cross-Reference Alternatives

Some Master Lock MPNs cross individual references to the equivalent Brady model numbers. So, if you're looking for a competitor item that is either out of stock or obsolete, chances are Raptor Supplies has the equivalent Master Lock products available.


These Master Lock products range from small to large sizes. They may require careful packaging as some items might get damaged while shipping. Hence, these Master Lock items are delivered by courier shipment and air freight for minimum downtime.

Major Trade Names

Commercial Magnum Padlocks

Commercial Magnum padlocks provide high security and weather ability for applications in corrosive, outdoor and caustic environments. They provide assurance for perimeter, equipment and vehicle securi...Read more 

ProSeries Padlocks

Master Lock's ProSeries padlocks are high-security, re-keyable locks designed using brass, steel and aluminium to cater to different security needs. The interchangeable core and door hardware cylinder...Read more 

Master Lock Competitive Advantages

Edge Key Control

Edge key control uses the patented & cylinder technology to protect the remote, portable and mobile security applications. These Edge keys cannot be cut or copied without the authority of the owner. They are used in American Lock and Master Lock padlocks and provide a cost-effective keying system in multiple padlock security applications

BumpStop Technology

Master Lock's BumpStop technology is a patent-pending solution to the security threat of lock bumping, a method of picking a lock without leaving evidence. BumpStop technology prevents the transfer of force from a bump key to the pins and blocks rotation of the cylinder. The technology has been tested by ASTM International, with Master Lock's locks exceeding Grade 6 lock bump test criteria due to the reverse rake tapered driver pin, high-performance spring and precision tolerance chamber. BumpStop technology is available with most pin tumbler padlocks and key-in-knob padlocks.

BlockGuard Anti-Shim Technology

BlockGuard Anti-Shim technology deters shimming by inserting a specially designed shim tool into its latch mechanism, which can cause the lock to release and unlock without the use of a key. BlockGuard combination locks feature a unique flat latch technology to actually block the opening of the lock of shimming tools. This enhanced combination lock technology makes it challenging for intruders to break into the lock, providing an additional level of security for the user.

Frequently Asked Questions

What is the difference between a keyed alike padlock and a master keyed padlock?

A keyed-alike padlock allows multiple padlocks to be opened with the same key, while a master keyed padlock allows multiple padlocks to be opened with different keys, and also allows a master key to open all of the locks.

How do I replace the battery on Master Lock 4901 biometric padlock?

  • Remove the bottom's cover.
  • Turn the battery door slot using a coin at 90 degrees counterclockwise.
  • Open & remove the old battery.
  • Insert a new CR2 battery with the positive side facing right.
  • Close the battery door and turn back the slot at 90 degrees clockwise & replace the bottom cover.

How do I set the combination on Master Lock 5422D & 5423D push button lock boxes?

  • Enter the combination to open the lockbox. If the user is setting the combination for the first time, press the CLEAR (C) button and then the OPEN button.
  • Locate the 12 yellow plastic slotted buttons behind the door.
  • Use the included yellow recode tool or a small flathead screwdriver, PUSH and TURN the numbers or symbols you want to use to the SET ON position.
  • Make sure that the numbers or symbols that you are not using are set to the SET OFF position.