Small Format Interchangeable Core Door Lock Cylinder Removable Replacement SFIC key American Lock Cylinder

This lock cylinder is a small format interchangeable core (SFIC), designed to match other SFIC housings as a complete cylinder.

Master Key System

EOS secure are able to provide master key system for this cylinder. Meanwhile, if you have in-house locksmithes, you can assemble the master key system by using the accessories including master pins.
Learn more about our Master key system service.


EOS secure provides customization and design services to boost your business.

Learn more about customization.

Small order

EOS secure provides small MOQ on our existing models for start-up customers or mock up samples for projects.

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master key system and security cylinders

10 years of experience of master key system and security cylinders

high precision lock cylinders

Tsugami CNC Swiss-type automatic Lathe machine to guarantee the precision

lock cylinders R&D

Support your customize and Innovative design

lock cylinders quality control

Implement the strictest quality control


Solid brass construction.
Available in 6 or 7 pins.
Available combinated and uncombinated.
A-2 System key pins, small format interchangeable core.
Key combination over 1,000,000.
Suitable for American standard locksets.
Suitable for doing master key system.

Small Format Interchangeable Core Small Format Interchangeable Core


Material of housing and plugs


Material of keys

Silver nickel

Key type

1 nickel silver control key and 2 nickel silver operating keys

Optional surface finishes

SC, SN, PB, SB, BLK, and so on


Making master locking system

Number of Pins

6/7 pins

Mutual opening

No mutual open with only 1 number difference

Increment of bottom pins

A-2 pin system. 0.32mm with over 1,000,000 combination


Combinated core or uncombinated core

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