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Commercial Lock Cylinders & Key Cylinder Replacements

Upgrade or replace your door security with our professional-grade lock cylinders. Whether you need standard Mortise cylinders for storefront doors or SFIC (Small Format Interchangeable Cores) for complex master key systems, we provide the brands and finishes required for commercial applications.


How to Identify Your Lock Cylinder

Choosing the right replacement cylinder requires checking three main factors:

  1. Cylinder Type: Mortise cylinders are threaded and screw directly into the lock body. Rim cylinders use long mounting bolts and a flat tailpiece.
  2. Length & Cam: For mortise cylinders, the length (e.g., 1-1/8") is vital to ensure it sits flush with the door or rose. Additionally, ensure the Cam on the back of the cylinder matches your lock brand (e.g., Adams Rite vs. Sargent).
  3. Core Type: Determine if you have a Fixed Core (requires disassembly to re-key) or an Interchangeable Core (IC), which can be removed instantly with a control key.

Mortise Cylinders

  • Threaded cylinders for mortise locks

Conventional Cylinders

  • Standard cylinders for cylindrical lever sets

Rim Cylinders

  • Used for exit devices and flat-tailpiece locks

IC Tailpieces

  • Used in the back of the IC Core to interact with the Housing or Lock Body 

Interchangeable Core Housings

  • Used to house the IC Cores
  • Includes Rim & Mortise Cylinders

Interchangeable Cores

  • SFIC and LFIC for quick re-keying