Medeco KeyMark

Medeco KeyMark

Medeco KeyMark
Name	Medeco KeyMark
Manufacturer	Medeco
Lock Type	Cylinder
Lock Design	Pin-tumbler
Year(s) Produced	1995-present
Patent	US #RE35518

The KeyMark is a pin-tumbler lock made by Medeco. The KeyMark is designed for installations where key control is more imporant than resistance to physical attacks, but it does offer basic defenses against picking and destructive entry. KeyMark is best known for its restrictive keyway, marketed as the "Security Leg"™.

Principles of operation

See also: Pin tumbler (Principles of Operation)

The KeyMark is a standard pin-tumbler lock that uses six pin stacks. The key raises all pin pairs to the correct height and the plug can be rotated. KeyMark models that use interchangeable cores have a dual shear line mechanism similar to those found in BEST locks. No security pins are used in the Keymark.

• 

  The KeyMark key.

• 

  Pins properly aligned at the shear line.

• 

  Pins improperly aligned at the shear line.

Disassembly instructions

The KeyMark is disassembled following traditional pin-tumbler disassembly steps:

1. Remove the cam or C-clip.
2. Insert the key and turn the plug 45-90 degrees.
3. Withdraw the plug from the cylinder. (A plug follower is recommended)

OR

1. Remove the chamber casings and take out each pin-stack individually
2. Remove the cam or C-clip.
3. Withdraw the plug from the cylinder.

Vulnerabilities

The KeyMark may be vulnerable to one or more of the following:

• Lockpicking
• Decoding
• Impressioning
• Key bumping

Gallery

• 

  Keymark SFIC cylinder.

• 

  KeyMark mortise cylinder.

See also

• Medeco
• Pin-tumbler