Corbin Russwin 631F248 LFIC Ta...
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Corbin Russwin 631F248 LFIC Tailpiece Kit for C6/C7 Cylindrical Lock Cylinders

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Model: 631F248

In Stock (leaves warehouse same day if ordered before 3pm ET)

$21.98
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Corbin Russwin 631F248 LFIC Tailpiece Kit for C6/C7 Cylindrical Lock Cylinders

The Corbin Russwin 631F248 is a genuine OEM cylinder replacement part designed specifically for cylindrical lock systems. This LFIC (Large Format Interchangeable Core) Tailpiece Kit is engineered for compatibility with C6 and C7 cylinder configurations, ensuring a precise, manufacturer-approved fit for cylindrical lock cylinder assemblies in commercial door hardware applications.

Key Features

  • LFIC Tailpiece Kit: Provides the essential Large Format Interchangeable Core tailpiece components required for proper cylinder operation in compatible cylindrical lock assemblies.
  • C6/C7 Cylinder Compatibility: Engineered specifically for Corbin Russwin C6 and C7 cylinder configurations, delivering a manufacturer-approved, drop-in fit with no modification required.
  • Genuine OEM Replacement Part: Sourced directly from Corbin Russwin as an authorized cylinder part, maintaining the integrity and performance of the original lock assembly.
  • Commercial-Grade Construction: Built to the same exacting standards as Corbin Russwin original components, supporting reliable operation in demanding commercial door hardware environments.
  • Simplified Maintenance: Allows field technicians and installers to restore cylinder functionality on existing cylindrical lock hardware without full lock replacement, reducing downtime and cost.
  • Precise Fit: Manufactured to Corbin Russwin's tight tolerances to ensure correct tailpiece engagement and smooth core operation within the cylindrical lock body.

Technical Specifications

  • Department: Door Hardware
  • Product Category: Mechanical Locks
  • Product Group: Parts and Accessories
  • Subcategory: Parts and Accessories
  • Product Subgroup: Parts and Accessories
  • Product Type: Cylinders
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: 631F248
  • Features: Corbin Russwin Cylinder Parts

Typical Applications

  • Commercial Office Buildings Requiring Cylinder Maintenance
  • Educational Facilities with Existing Corbin Russwin Cylindrical Lock Systems
  • Healthcare Institutions Maintaining Commercial Door Hardware
  • Retail Establishments Servicing Cylindrical Lock Assemblies
  • Government and Municipal Buildings with Corbin Russwin Hardware
  • Industrial and Warehouse Facilities Performing Lock Cylinder Repairs
  • Multi-Tenant Residential Properties with Commercial-Grade Cylindrical Locks

Why Corbin Russwin 631F248?

Corbin Russwin cylinder parts are manufactured to the same exacting standards as original factory components, ensuring seamless integration with existing C6 and C7 cylindrical lock systems. The 631F248 LFIC Tailpiece Kit delivers a dependable, genuine OEM solution for commercial door hardware maintenance, supporting long-term reliability and system integrity in high-demand applications.

Manufacturer Resources

Product Specs

Department:
Door Hardware
Product Category:
Mechanical Locks
Product Group:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Cylinders
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
631F248
Features:
Corbin Russwin Cylinder Parts

Corbin Russwin 631F248 – Frequently Asked Questions

1) What does the Corbin Russwin 631F248 tailpiece kit actually do, and which cylinders does it fit?
The 631F248 is the LFIC (large format interchangeable core) tailpiece kit for Corbin Russwin cylindrical lock cylinders. It supplies the tailpiece components that let the core drive the lock. It is built for Corbin Russwin C6 and C7 cylinder configurations as a drop-in fit with no modification. It is a cylinder part, not a complete cylinder or core, so you still need the core and the lock body.
2) Will the 631F248 kit work on a Corbin Russwin mortise lock or a rim cylinder?
No. The 631F248 tailpiece kit is specified for cylindrical lock cylinders in the C6 and C7 configurations. Mortise and rim applications use different cylinder and cam hardware, so this kit is not the part for those. If you need a rim cylinder rather than a cylindrical tailpiece, a Schlage Commercial 20-021 (6-pin, vertical tailpiece cam) or 20-022 (horizontal tailpiece cam) is the rim-type part.
3) Does the 631F248 kit come with a core or keys?
No core and no keys. The 631F248 supplies the LFIC tailpiece components only. If you need the interchangeable core itself, BEST 1C Series standard 5-pin cores and the Peaks 1CB 150 Series interchangeable core are separate items, and Schlage's 20-057 is a full-size interchangeable core cylinder. Note those are other manufacturers' keying systems, so match the core to your existing system.
4) I need a replacement cylinder rather than just the tailpiece - what are my options?
The Corbin Russwin 631F248 supplies only the tailpiece components for a C6/C7 large format interchangeable core cylinder, so it restores cylinder function on an existing lock rather than replacing the cylinder. If the cylinder itself is bad, complete key-in-knob and key-in-lever cylinders include the Kaba Ilco 1539 universal key-in-knob/lever cylinder, the Kaba Ilco 1599 key-in-knob replacement cylinder, and the Falcon A23161-05 G key in lever cylinder with a 6-pin G keyway, keyed different and supplied with two cut keys.
5) Will a BEST 1CB interchangeable core work with the Corbin Russwin 631F248 tailpiece kit?
No. The Corbin Russwin 631F248 is a tailpiece kit engineered specifically for Corbin Russwin C6 and C7 large format interchangeable core cylinder configurations, so its parts are matched to Corbin Russwin core geometry. The BEST 1CB is a 1CB Series interchangeable core cylinder of its own, and the BEST 1CDF is a drill resistant patented 7-pin interchangeable core in brass - both are BEST small format cores rather than Corbin Russwin C6/C7 LFIC hardware. If you are servicing a Corbin Russwin cylindrical lock, stay with the 631F248 kit; if the door already carries BEST cores, the core itself is what you order.
6) My exit device needs a cylinder with a specific tailpiece cam orientation - does the Corbin Russwin 631F248 cover that?
No. The 631F248 provides tailpiece components for Corbin Russwin C6/C7 large format interchangeable core cylinders used in cylindrical locks. For rim applications where cam orientation matters, Schlage offers the 20-021 6-pin rim cylinder with a vertical tailpiece cam and the 20-022 6-pin rim cylinder with a horizontal tailpiece cam, each supplied with two keys, and the 20-057 rim cylinder with a convertible tailpiece cam if you want to set orientation in the field.
7) What should I use instead of the Corbin Russwin 631F248 on a mortise deadlock or an aluminum storefront door?
The 631F248 is a tailpiece kit for Corbin Russwin C6/C7 large format interchangeable core cylinders in cylindrical locks, so it does not apply to mortise deadlock openings. For those, the Adams Rite 4036 is a five-pin mortise cylinder rated Grade 1 in the 4036 Series with a 1/2 inch minimum door thickness, and the Adams Rite 4024 cylinder pull with trim plate mounting and the 4025 five pin tumbler cylinder pull with through-screws are both intended for the Adams Rite MS1847 deadlock/deadlatch. For a wood door deadlock, the Adams Rite 4026 five pin tumbler cylinder pull is designed for the 5017 wood door deadlock/deadlatch.
8) Is the 631F248 a genuine Corbin Russwin part or an aftermarket copy?
Genuine OEM. The 631F248 is an authorized Corbin Russwin cylinder replacement part, made to the factory's tolerances so the tailpiece engages correctly and the core turns smoothly in the cylindrical lock body. For institutional buyers standardizing on Corbin Russwin hardware, that keeps the assembly all-OEM.
9) Can I fix a Corbin Russwin cylindrical lock with this kit instead of replacing the whole lockset?
That is the point of it. The 631F248 restores cylinder function on existing C6/C7 cylindrical hardware, so a maintenance tech swaps the tailpiece rather than pulling and replacing the entire lock. For a property manager or MRO shop with a run of Corbin Russwin openings, it keeps the doors and the keying scheme intact.
10) Is the Schlage 20-057 FSIC cylinder an equivalent to the Corbin Russwin 631F248?
They are different classes of part. The 631F248 is a tailpiece kit for Corbin Russwin C6/C7 large format interchangeable core cylindrical lock cylinders - a maintenance part, not a cylinder. The Schlage 20-057 is a 6-pin full size interchangeable core rim cylinder with a convertible tailpiece cam, and the Schlage 20-057-C is a full size interchangeable core cylinder in the C keyway with a 643E aged bronze finish. Those are complete rim-mounted assemblies for Schlage FSIC systems, so they do not serve a Corbin Russwin cylindrical lock rebuild.
11) I have Sargent locks, not Corbin Russwin - is the 631F248 the right tailpiece kit?
No. The 631F248 is built for Corbin Russwin C6 and C7 cylinder configurations and is a genuine Corbin Russwin cylinder part, so it is matched to that hardware. For Sargent knob and lever locks, the Kaba Ilco 1579 is a knob and lever cylinder specified for Sargent. Kaba Ilco also lists the 1549 key-in-deadbolt cylinder for deadbolt applications.
12) Does the Corbin Russwin 631F248 include a keyed core, or do I need to buy that separately?
The 631F248 supplies the large format interchangeable core tailpiece components needed for proper cylinder operation - it is a replacement parts item, not a keyed core. If you also need a core, comparable cores include the BEST 1C Series standard 5-pin cylinder core and the BEST 1CB 150 Series interchangeable core, with the BEST 1CDF offered as a drill resistant patented 7-pin version. Note those are BEST cores and are keyed to BEST systems, so match the core to the lock brand already on the door.
13) For a residential handleset or deadbolt retrofit, is the Corbin Russwin 631F248 usable?
No. The 631F248 is a commercial door hardware part for Corbin Russwin C6/C7 cylindrical lock cylinders. For handleset and deadbolt retrofits, Medeco offers the 1075127 5-pin rim type lazy motion single cylinder for handlesets and deadbolts, the 1012040 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the 1065140 5-pin retrofit cylinder for Arrow JL interconnected locks and Emtek handleset and deadbolt outside cylinders, and the 1065244 5-pin rim lazy motion cylinder supplied with an Emtek tailpiece. Emtek also lists the CY4 cylinder sold each.
14) I just need to fill a cylinder hole with no key function - is the 631F248 what I want?
No. The 631F248 is a functional tailpiece kit that restores cylinder operation on Corbin Russwin C6/C7 cylindrical locks. For a non-functioning filler, the BEST 12E Series dummy rim cylinder with a 1-5/32 inch diameter is the part built for that purpose.
15) Is the 631F248 kit rated for commercial door use or is it a residential part?
Commercial. Corbin Russwin lists the 631F248 as a commercial-grade cylinder part, and it is used in offices, schools, healthcare, retail, government buildings, warehouses and multi-tenant residential buildings running commercial-grade cylindrical locks.
16) How many part numbers do I have to choose from when ordering the 631F248?
Just one. The 631F248 ships as a single kit with no finish, length, or handing options to specify, so ordering is by model number alone.
How fast can I get the Corbin Russwin 631F248 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Corbin Russwin 631F248 come with a warranty?
Absolutely. The Corbin Russwin 631F248 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Corbin Russwin 631F248?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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