Extension Lock

Medeco® offers a threaded extension lock that can be used in laundry, vending or a variety of other applications.  All models feature hardened steel inserts that protect against drilling and other forms of vandal attacks on the cylinder.

In addition to excellent protection against physical attack, Medeco® features patented key control and pin tumblers that must elevate, rotate and aa unique triple locking action, that makes the locks virtually pickproof.  All Medeco® keys and locks are protected under patent trademark and copyright laws. Medeco3 keys may only be duplicated by Medeco or an authorized Medeco® dealer and only at your request.

To compare the mechanical features, see the below chart.

Mechanical Cylinder Features



Medeco X4

UL listed x x x
Can be incorporated into master key system with cam lock products x x x
Protect against drill, wrenching, bumping and prying attacks x x  
Solid Brass Construction x x x
Patent Protected Keys x x x


  • All Medeco® cylinders are constructed of durable machined brass components, designed to last the life of your equipment
  • Hardened stainless steel inserts inside the cylinder provide the ultimate defense against drilling and other forms of physical attack
  • Unique elevating and rotating tumbler pin system is virtually pick proof
  • Patented Medeco3 keys may only be duplicated by Medeco® or an authorized Medeco® service outlet, and only at your request
  • Medeco® Extension Locks are completely serviceable, and can be re-keyed in case of lost or stolen keys.
  • Medeco® Extension Locks can be keyed in with other 60 Series products (10 Series products may be keyed into existing 60 Series systems)
  • Locks can be keyed alike, keyed different, or master keyed depending on your specific needs.


Medeco's threaded extension and rotary locks can be used in laundry, vending or a variety of other applications.


Warranted for two (2) years against manufacturer's defects. See the Medeco® limited warranty for full details.

Technical Information:

  • Four and five pin models available depending on size
  • Available with a rotary t or threaded extension
  • 5/16 inch  - 24 thread
  • 5/16 inch - 18 thread
  • Various lengths


  • 26 brushed chrome finish standard
  • Other finishes available, depending on volume

Factory Authorized Service Centers

For industrial or OEM service call 1-800-675-7558. or click here for a list of Engineered Security Solution Factory Authorized Service Centers.