Corbin Russwin 488K99 27B1 5 a...
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Corbin Russwin 488K99 27B1 5 and 6-Pin X-Class Individual Plug for CK4200, UT5200 and 2000-051 Cylinders, B Keyway

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Model: 488K99 27B1 626
$63.00
$58.70

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

$63.00
$58.70
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Corbin Russwin 488K99 27B1 5 and 6-Pin X-Class Individual Plug for CK4200, UT5200 and 2000-051 Cylinders, B Keyway

The Corbin Russwin 488K99 27B1 is a precision-engineered 5 and 6-Pin Individual X-Class cylinder plug designed for commercial-grade mechanical lock applications. Compatible with Corbin Russwin CK4200, UT5200 (.552") and 2000-051 cylinder series, this replacement plug features a B Keyway and is built to maintain the integrity and performance of your existing Corbin Russwin cylinder hardware. Classified as a commercial replacement part, it delivers the reliable, manufacturer-matched fit that professional locksmiths and facility managers require.

Key Features

  • X-Class Plug Design: Individual X-Class plug construction engineered to exact Corbin Russwin specifications for precise fit and reliable operation within compatible cylinder bodies.
  • 5 and 6-Pin Compatibility: Supports both 5-pin and 6-pin configurations, offering flexibility for a range of keying and security requirements across compatible lock cylinders.
  • B Keyway: Features the Corbin Russwin B Keyway for controlled key compatibility and keyway-specific security management within keying systems.
  • Broad Cylinder Compatibility: Designed for use with Corbin Russwin CK4200, UT5200 (.552") and 2000-051 cylinder series, ensuring accurate replacement without modification.
  • UT5200 Dimension Reference: Specifically sized for the UT5200 at .552" to maintain dimensional accuracy and proper cylinder function upon installation.
  • Commercial-Grade Replacement Part: Manufactured to Corbin Russwin quality standards as an authorized cylinder component for professional commercial lock maintenance and rekeying applications.
  • Direct Manufacturer Match: As a genuine Corbin Russwin cylinder part, this plug maintains the performance characteristics and security standards of the original cylinder assembly.

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: 488K99 27B1
  • Features: Corbin Russwin Cylinder Parts

Typical Applications

  • Commercial Office Buildings Requiring Lock Cylinder Maintenance
  • Educational Facilities with Existing Corbin Russwin Keying Systems
  • Healthcare Institutions Managing Master Key Programs
  • Government and Municipal Buildings with Controlled Access Systems
  • Multi-Tenant Residential and Mixed-Use Properties
  • Industrial and Warehouse Facilities Servicing Commercial Lock Hardware
  • Professional Locksmith and Facility Maintenance Operations

Why Corbin Russwin 488K99?

Corbin Russwin cylinder components are manufactured to exacting commercial standards, ensuring that replacement parts like the 488K99 27B1 plug deliver the same dimensional accuracy and keying security as the original factory assembly. Engineered for compatibility with CK4200, UT5200 (.552"), and 2000-051 cylinder series, this plug supports professional-grade lock maintenance in demanding commercial environments where precision and security compliance are non-negotiable.

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:
488K99 27B1
Features:
Corbin Russwin Cylinder Parts

Corbin Russwin 488K99 27B1 626 – Frequently Asked Questions

1) Is the 488K99 a complete cylinder or just the plug?
Just the plug, the keyed core barrel that the key turns inside the cylinder shell. It is sold as an individual replacement part, not a full cylinder assembly. If you need a whole cylinder rather than a rebuild component, look at a complete mortise or rim cylinder instead, such as the Schlage 20-021 rim cylinder or the Detex MC65 mortise cylinder.
2) What do I have to specify when ordering a Corbin Russwin 488K99 plug?
Three things: keyway, pin depth, and finish. Keyway is B1 or B2. Pin depth is offered in 27, 57, 67 and 77. Finish is 606 satin brass or 626 satin chrome. All four pin depths are available in both keyways and both finishes, so pick the combination that matches the keying system you are servicing.
3) I manage a building keyed to Corbin Russwin B keyway. Does this plug keep the doors on the same key system?
Yes, as long as your system is on the B keyway family. The plug is supplied in B1 or B2, and pinning it to your existing key bitting keeps the door in the same master key hierarchy. Order the keyway that matches your other cylinders, not just the pin depth, since a B1 plug will not accept a B2-only key blank.
4) Can I use this Corbin Russwin plug in a BEST or Schlage interchangeable core?
No. The 488K99 is cut to Corbin Russwin X-Class geometry for CK4200, UT5200 and 2000-051 cylinders, and the B keyway is a Corbin Russwin keyway. For a BEST small format core you want a BEST core such as the 1C Series 5-pin, and for a Schlage full size interchangeable core, the Schlage 20-057 FSIC.
5) Can a BEST 1C core be used instead of the Corbin Russwin 488K99 27B1 plug?
No. The 488K99 27B1 is a loose X-Class cylinder plug with a B keyway that drops into an existing Corbin Russwin CK4200, UT5200 (.552 inch) or 2000-051 cylinder body, so the surrounding cylinder shell stays in the door. The BEST 1C is a standard 5-pin interchangeable core, a complete core assembly that seats in a BEST-prepped figure-eight housing. They serve different hardware: one rebuilds a Corbin Russwin cylinder, the other replaces a core in an IC housing.
6) I need a whole replacement cylinder, not just a plug - what should I look at instead of the 488K99?
The 488K99 27B1 is a plug only, supplied in 5 and 6-pin X-Class form for rebuilding an existing Corbin Russwin cylinder. If the cylinder body itself is damaged or missing, a complete unit is the right call: the Detex MC65 is a 1-1/8 inch 6-pin mortise cylinder in the Schlage C keyway, and the Schlage 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam supplied with two keys. Choose by the lock prep you have - mortise threaded body versus rim mount.
7) Will the 488K99 work in a 6-pin keying system, or only 5-pin?
Both. The plug supports 5-pin and 6-pin configurations, so it can be pinned into a five-pin system or a six-pin masterkeyed program on the same Corbin Russwin cylinder families.
8) What is the .552 inch reference on the UT5200 about?
That is the plug length dimension tied to the UT5200 cylinder. The 488K99 is sized at .552 inch for that application, which is what keeps the plug flush and turning correctly in a UT5200 body. If your UT5200 cylinder takes a different plug length, this is not the right part number.
9) What do I use on an aluminum storefront door if the Corbin Russwin 488K99 plug does not fit that lock?
The 488K99 27B1 serves Corbin Russwin CK4200, UT5200 (.552 inch) and 2000-051 cylinders. Aluminum storefront hardware usually needs a different cylinder entirely: the Adams Rite 4036 is a Grade 1 five-pin mortise cylinder rated for doors from 1/2 inch minimum thickness, and the Adams Rite 4024 and 4025 are cylinder pulls made for the MS1847 deadlock and deadlatch, the 4025 with five pin tumbler and through-screws. Match the choice to the Adams Rite lock body already in the stile.
10) We are moving a facility to interchangeable core so we can rekey without a locksmith - what replaces rebuilding plugs like the 488K99?
Rebuilding with the 488K99 27B1 X-Class plug keeps the existing Corbin Russwin CK4200, UT5200 or 2000-051 cylinders in service and requires pinning at the bench. A core-based program swaps keying at the door instead: the Schlage 20-057 is a 6-pin full size interchangeable core rim cylinder with a convertible tailpiece cam and two keys, and the BEST 1CDF is a drill-resistant patented 7-pin brass interchangeable core in the 150 series. Both require the matching IC-prepped housing, so this is a hardware change rather than a drop-in.
11) The Corbin Russwin 488K99 comes in B1 and B2 keyways - is there an equivalent part for a Falcon or Schlage keyed system?
The 488K99 27B1 plug is offered in B1 and B2 keyway options in 606 satin brass and 626 satin chrome, and those keyways belong to the Corbin Russwin system. For other keying families you are buying a different cylinder rather than a plug: the Falcon A23161-05 G is a key-in-lever cylinder in the RU/T series with a 6-pin G keyway, keyed different and supplied with two cut keys, and the Schlage 20-057-C is a full size interchangeable core in the C keyway, 643E aged bronze. A plug cannot cross keyway families, so the keying system on site decides the part.
12) For a residential-style deadbolt or handleset, is the Corbin Russwin 488K99 the right cylinder part?
It is not. The 488K99 27B1 is a commercial replacement part for Corbin Russwin CK4200, UT5200 and 2000-051 cylinders. Deadbolt and handleset retrofits are served by dedicated cylinders such as the Medeco 1075127, a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts, the Medeco 1065244 rim lazy motion cylinder with an Emtek tailpiece, or the Medeco 1012040, a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts. Pick by the lock brand and tailpiece the door already uses.
13) What is the difference between ordering the 488K99 plug and a universal key-in-knob cylinder like the Kaba Ilco 1539?
The 488K99 27B1 is a manufacturer-matched X-Class plug that fits only Corbin Russwin CK4200, UT5200 (.552 inch) and 2000-051 cylinder bodies, so the original cylinder, cam and keyway system stay intact. The Kaba Ilco 1539 is a universal key-in-knob and lever cylinder, and the 1549 is a key-in-deadbolt cylinder, both catalogued for deadbolt function and intended to cover a range of lock bodies with supplied tailpieces. One preserves an existing Corbin Russwin keying program, the other replaces the cylinder outright.
14) Does the plug finish have to match the lock trim on the door?
Not for function, and mostly not for looks either, since the plug sits inside the cylinder with only the keyway face visible. The two choices are 606 satin brass and 626 satin chrome, and locksmiths usually pick whichever matches the cylinder housing and surrounding trim.
15) Is the 488K99 plug rated for commercial use or is it a residential part?
Commercial. It is catalogued as a commercial Corbin Russwin cylinder component for mechanical lock service, the kind of part used for rekeying and cylinder rebuilds in offices, schools, healthcare and government buildings running Corbin Russwin master key programs.
16) Do I need a keyed plug like the 488K99 for a door that only needs a pull with no key function?
No. The 488K99 27B1 is a keyed X-Class plug for live Corbin Russwin cylinders. Where a door needs the cylinder appearance without key operation, the BEST 12E series dummy rim cylinder with a 1-5/32 inch diameter fills the prep without a working keyway. Confirm the existing rim prep diameter before ordering the dummy.
How fast can I get the Corbin Russwin 488K99 27B1 626 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 488K99 27B1 626 come with a warranty?
Absolutely. The Corbin Russwin 488K99 27B1 626 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 488K99 27B1 626?
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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