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FSIC Full Size Inter-changeable Cores

With shared full-size keyways, these interchangeable cores can be blended into a campus alongside Schlage conventional cylinders and are upgradeable to Primus® level security.

 

Looking for more information? Connect with an Allegion team member for help.

Overview

Schlage Full Size Interchangeable Core (FSIC) cylinders are offered in 6-pin length Schlage format FSIC, and both Sargent® and Corbin Russwin® formats as LFIC in Everest 29 S and T keyway families. Seven-pin SL cylinders matching the Schlage FSIC format are also available in the restricted Everest 29 R keyway. These interchangeable types of cores are a convenient solution in large buildings or campuses where frequent rekeying occurs, often due to tenant changeover. Schlage FSIC and LFIC formatted cylinders are upgradeable to Primus® levels of security and share keyways with Schlage conventional cylinders.

Sargent® and Corbin Russwin® trademarks are the property of Sargent Manufacturing Co. and Assa Abloy respectively.

  Primus Upgradeable

  FSIC

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Key Systems

For frequently asked questions, educational resources and technical product materials visit the Key Systems 101 page. 

Security

  • Available in Schlage Classic Obverse open keyways for basic security (FSIC format) and Everest 29 open and restricted keyways with a check pin in the cylinder for better physical security (FSIC and LFIC formats)
  • Schlage Obverse and all Everest keyways can gain upgraded security in Primus cylinders featuring the addition of an independent finger pin and sidebar mechanism, restricted distribution and geographically assigned factory-milled side bitting

 

Convenience

  • Use of a special control key allows these cylinders to be removed from  the lock without disassembly for fast rekeying

 

Compatibility

  • Shared keyway families allows integration into an existing Schlage conventional cylinder system
  • FSIC formatted SL cylinders are uniquely designed to accept the same A2 pinning system used in Schlage's SFIC 7-pin cylinders
  • All Schlage commercial mechanical, electrified mechanical and electronic locks are offered in designs made to fit Schlage FSIC formatted cylinders
  • LFIC formats are made to fit Sargent® and Corbin Russwin® locks to enable Everest 29 and Primus XP levels of security improvement and facilitate conversion to Schlage lock designs over time.
  • FSIC also fits Schlage deadlocks, cabinet locks, padlocks and locking cables

Sargent® and Corbin Russwin® trademarks are the property of Sargent Manufacturing Co. and Assa Abloy respectively.

Construction

  • Solid brass bar stock construction (cylinder and housing)
  • 6-pin keying length (SL FSIC 7-pin)
  • Rear mortise cylinder housing sizes range from 1-1/8" to 1-3/4"
  • 9 available mortise cylinder cam options
  • Available with or without Schlage logo

 

Physical and administrative security

  • Basic security: open Classic keyways are available in a standard pin and tumbler cylinder design (FSIC only)
  • Basic security: patented, non-restricted Everest 29 S keys engage with an added check pin in the cylinder
  • Enhanced security: patented, restricted Everest 29 T keys also require a check pin in the cylinder
  • Upgraded security: patented Primus cylinders add a secondary, independent sidebar and finger pin locking mechanism and are available in 5 levels of geographic exclusivity 

 

Application

  • Master keying, open or restricted keyways, and Primus options available
  • Available as rim cylinders for exit devices including Von Duprin and other straight cam applications
  • Construction keying available as refundable construction cores

 

Design variations 

Locks using a mortise housing made to fit Schlage FSIC, or Sargent® and Corbin Russwin® LFIC formats can also be converted to Schlage keyways

 

Sargent® and Corbin Russwin® trademarks are the property of Sargent Manufacturing Co. and Assa Abloy respectively.

 

Mortise and rim front housing finishes

605 Bright brass

605 Bright brass

606 Satin brass

606 Satin brass

609 Antique brass

609 Antique brass

612 Satin bronze

612 Satin bronze

613 Oil rubbed bronze

613 Oil rubbed bronze

619 Satin nickel

619 Satin nickel

622 Matte black

622 Matte black

625 Bright chrome

625 Bright chrome

626 Satin chrome

626 Satin chrome

643e Aged bronze (simulated equivalent)

643e Aged bronze (simulated equivalent)

Plug/core face finishes

606 Satin brass

606 Satin brass

613 Oil rubbed bronze

613 Bronze (simulated equivalent)

622 Matte black

622 Matte black

626 Satin chrome

626 Satin chrome

Open keyways upgradeable to Primus RP

  • Schlage Classic Obverse open keyways, including Schlage C
  • Classic Obverse gains patent protection in a Primus RP cylinder 

 

Patented keyways upgradeable to Primus XP

  • Everest 29™ S keyways include S123 which is the default keyway for all Schlage locksets 
  • Everest 29™ T restricted keyways
  • Everest 29™ R restricted keyways as a SL cylinders in an FSIC format with the same A2 pinning style of an SFIC 

 

Upgrades for legacy Everest key systems

  • Everest 29 R, S and T keyways are compatible to the legacy Everest B, C and D keyway families respectively
  • Legacy Everest keyways are upgradeable to Primus XP 

 

Master Keying

  • Factory master keying available

Electronic validation through the restrictedproduct.allegion.com website (Chrome browser recommended) allows users to easily manage all order authorizations for restricted key systems.

  • Eliminates paperwork and saves time
  • Provides a secure communication portal for generating restricted product authorizations
  • Creates electronic face sheets that can be faxed or emailed
  • Enables user review of order authorization history
  • Allows users to manage who can generate restricted product authorizations

 

For more information:

 

The Allegion interactive key systems chart can help you learn about layered security and how to apply it in your building. 

Need Replacement Parts?

Get the resources you need to get in touch with an Allegion team member for Schlage replacement parts.

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Additional Resources

Did You Know?

Schlage revolutionized the door lock industry with the 1922 release of the cylindrical push-button lock. Over 100 years after Walter Schlage patented it, this design is still in use today.

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