Corbin Russwin 487K21 7-Pin X ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$94.00
$81.02
Image coming soon

Corbin Russwin 487K21 7-Pin X Class Mortise Cylinder Plug, 2" Mortise, 27B2 Keyway, Satin Brass

(No reviews yet) Write a Review

Model: 487K21 27B2 626

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

$94.00
$81.02
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Corbin Russwin 487K21 7-Pin X Class Mortise Cylinder Plug, 2" Mortise, 27B2 Keyway, Satin Brass

The Corbin Russwin 487K21 is a 7-Pin X Class replacement plug engineered for 2" mortise cylinder applications. Finished in Satin Brass and featuring the 27B2 keyway, this precision-machined cylinder plug is designed for seamless integration into Corbin Russwin mortise lock systems. Built for commercial-grade performance, it delivers the exacting tolerances and reliable key control expected from Corbin Russwin cylinder parts in demanding institutional and commercial environments.

Key Features

  • 7-Pin X Class Configuration: Seven-pin tumbler X Class plug design provides enhanced key control and security for commercial mortise lock applications.
  • 2" Mortise Format: Engineered specifically for 2" mortise cylinder housings, ensuring precise fit and consistent operation within compatible Corbin Russwin mortise lock assemblies.
  • 27B2 Keyway: Factory-specified 27B2 keyway provides compatibility with corresponding Corbin Russwin key blanks and master key systems.
  • Satin Brass Finish: Satin Brass finish coordinates with matching hardware trim and delivers a professional aesthetic suited to commercial interiors.
  • Genuine Corbin Russwin Cylinder Part: Manufactured as an authentic Corbin Russwin cylinder component, ensuring proper fit, function, and system integrity when servicing or replacing existing hardware.
  • Commercial-Grade Construction: Precision-machined to Corbin Russwin tolerances for smooth, reliable key operation in high-use commercial and institutional settings.
  • Direct Replacement Part: Designed as a replacement component for compatible Corbin Russwin mortise lock cylinder assemblies, simplifying field service and maintenance.

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: 487K21 27B2
  • Features: Corbin Russwin Cylinder Parts

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Retail Establishments
  • Industrial and Warehouse Facilities

Why Corbin Russwin 487K21?

Corbin Russwin cylinder parts are engineered to exact manufacturer specifications, ensuring that replacement components perform identically to original factory-installed hardware. The 487K21 7-Pin X Class plug maintains the security and operational integrity of the mortise lock system, making it the professional's choice for servicing Corbin Russwin mortise cylinder assemblies in commercial applications where reliability and key control are paramount.

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:
487K21 27B2
Features:
Corbin Russwin Cylinder Parts

Corbin Russwin 487K21 27B2 626 – Frequently Asked Questions

1) Can I use my existing Corbin Russwin keys after installing this plug?
Only if your keys are cut on the 27B2 keyway. The plug is factory-specified to 27B2, which is what determines key blank and master key system compatibility. Rekeying the plug to your existing 27B2 bitting is normal locksmith work; crossing it to a different Corbin Russwin keyway is not.
2) I need a complete mortise cylinder, not just a plug — what should I order instead of the Corbin Russwin 487K21?
The 487K21 is a replacement plug for a 2 inch Corbin Russwin mortise cylinder, so it only makes sense if you already have the cylinder shell and are rebuilding it. If you need a whole mortise cylinder, the Detex MC65 is a 1-1/8 inch 6-pin commercial mortise cylinder in the Schlage C keyway, and the Adams Rite 4036 is a five-pin Grade 1 mortise cylinder. Both of those are complete cylinders you can thread into a mortise lock body; the 487K21 is a component that goes inside one.
3) Is a BEST interchangeable core the same idea as the Corbin Russwin 487K21 plug?
No. The 487K21 is a 7-pin X Class plug that is fitted into an existing 2 inch Corbin Russwin mortise cylinder shell, so servicing means rebuilding the cylinder. BEST interchangeable cores such as the 1CB 150 Series core or the 1CDF drill resistant 7-pin brass 150 Series core pull out of the housing with a control key and drop back in, so rekeying is a swap rather than a repin. The BEST 1C Series standard 5-pin core is the same removable-core format in a 5-pin configuration.
4) My opening uses a rim device, not a mortise lock — what takes the place of the 487K21 there?
The 487K21 serves a 2 inch mortise cylinder, which threads into a mortise lock body and will not fit a rim exit device. For rim applications the Schlage 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam and the 20-022 is the same 6-pin rim cylinder with a horizontal cam, so the cam orientation is chosen to match the device. If you want a removable core on the rim side, the Schlage 20-057 is a 6-pin full size interchangeable core rim cylinder with a convertible tailpiece cam.
5) What finishes does the 487K21 mortise cylinder plug come in?
Two: 606 Satin Brass and 626 Satin Chrome. Pick the one that matches the escutcheon or rose already on the door, since the plug face is the visible part once it is in the cylinder.
6) I manage a building with Corbin Russwin mortise locks. Is this the right part to fix a worn key cylinder?
If the cylinder body and cam are sound and it is the keyed plug that is worn or needs to change hands, the 487K21 is the service part for 2 inch Corbin Russwin mortise cylinders on 27B2. If the housing itself is damaged or you want to move the opening to a different keyway, replace the whole mortise cylinder instead of the plug.
7) I need a whole mortise cylinder, not a plug. What else does ZenSupply carry?
For a complete mortise cylinder, the Adams Rite 4036 is a Grade 1 five-pin mortise cylinder, and the Detex MC65 is a 1-1/8 inch six-pin mortise cylinder on the Schlage C keyway. Neither is on the Corbin Russwin 27B2 keyway, so they suit a new or standalone opening rather than an existing 27B2 master key system.
8) Will this plug fit a rim cylinder or a key-in-lever cylinder?
No. The 487K21 is machined for 2 inch mortise cylinder housings only. For a rim device you would need a rim cylinder such as the Schlage 20-021 with vertical tailpiece cam or the 20-022 with horizontal cam; for key-in-lever replacement, cylinders like the Kaba Ilco 1539 or Falcon A23161-05 G cover that format.
9) If I want interchangeable cores instead of fixed plugs, what should I look at?
A plug like the 487K21 is serviced by pulling the cylinder, so it suits fixed-cylinder hardware. If you want to rekey by swapping cores at the door, look at interchangeable core products such as the BEST 1C 5-pin core, the BEST Peaks 1CB 150 Series core, the drill-resistant BEST 1CDF 7-pin brass core, or a full size interchangeable core setup like the Schlage 20-057 FSIC rim cylinder.
10) Will the Corbin Russwin 487K21 work in a key-in-lever or key-in-knob lockset?
No. The 487K21 is a plug built for 2 inch Corbin Russwin mortise cylinder housings, which is a different format from the cylinders used in key-in-knob and key-in-lever locks. For those, the Falcon A23161-05 G is a key-in-lever cylinder in the RU/T series 6-pin G keyway supplied keyed different with two cut keys, and the Kaba Ilco 1539 Series is a universal key-in-knob and lever cylinder. The Kaba Ilco 1599 is a key-in-knob replacement cylinder, and the 1579 is a knob and lever cylinder for Sargent locks.
11) I have a deadbolt to rekey — is the 487K21 plug the right part?
It is not; the 487K21 is a mortise cylinder plug for Corbin Russwin mortise lock assemblies. For deadbolt work the Kaba Ilco 1549 Series is a key-in-deadbolt cylinder, and Medeco offers several retrofit deadbolt cylinders: the 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the 1065140 is a 5-pin retrofit for Arrow JL interconnected locks and Emtek handleset and deadbolt outside cylinders, and the 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts.
12) Does the 487K21 plug carry a keyway I can put on a narrow stile aluminum door with an Adams Rite deadlock?
The 487K21 is a 7-pin X Class plug in the 27B2 keyway made for 2 inch Corbin Russwin mortise cylinder housings, so it is chosen to match an existing Corbin Russwin system rather than an Adams Rite deadlock. Adams Rite MS1847 deadlock and deadlatch openings are served by the 4024 cylinder pull with trim plate mounting and the 4025 five pin tumbler cylinder pull with through-screws; for a wood door, the 4026 five pin tumbler cylinder pull is built for the Adams Rite 5017 wood door deadlock and deadlatch.
13) Is the 487K21 rated for high-traffic commercial doors or is it a residential part?
Commercial. Corbin Russwin lists it as a commercial cylinder part for mortise lock service in offices, schools, healthcare, government buildings, multi-tenant residential and retail, where key control and repeat daily use matter.
14) How do I specify a 487K21 plug when I order it?
Call out the model as 487K21 with the 27B2 keyway, then the finish: 606 Satin Brass or 626 Satin Chrome. The 7-pin X Class configuration and 2 inch mortise format are built into the part, so the finish is the only choice left on the order.
15) I only need to fill a cylinder hole with no key function — is there an alternative to ordering the 487K21?
The 487K21 is a keyed 7-pin X Class plug, so it is the wrong choice where no key operation is wanted. A BEST 12E Series dummy rim cylinder with a 1-5/32 inch diameter fills the prep and presents matching cylinder trim without operating anything. The 487K21 should be reserved for rebuilding a working 2 inch Corbin Russwin mortise cylinder.
16) Can I match the Satin Brass or Satin Chrome of the 487K21 with another brand's cylinder on the same building?
The 487K21 plug is offered in 606 Satin Brass and 626 Satin Chrome, which is how it coordinates with Corbin Russwin trim already on the door. Cross-brand finish matching is less direct: the Schlage 20-057-C full size interchangeable core is supplied in 643E Aged Bronze with the C keyway, a different finish and keyway family. If finish consistency across a commercial opening matters, keeping the mortise cylinder parts within the Corbin Russwin finishes is the cleaner path.
17) Is the Emtek CY4 cylinder a substitute for the Corbin Russwin 487K21?
No. The Emtek CY4 is a cylinder sold each as an Emtek part, intended for Emtek hardware. The 487K21 is a commercial 7-pin X Class plug for 2 inch Corbin Russwin mortise cylinder housings in the 27B2 keyway. If the existing hardware is Emtek, the Medeco 1065244 is a 5-pin rim lazy motion rim type cylinder supplied with an Emtek tailpiece.
How fast can I get the Corbin Russwin 487K21 27B2 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 487K21 27B2 626 come with a warranty?
Absolutely. The Corbin Russwin 487K21 27B2 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 487K21 27B2 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
Why buy the Corbin Russwin 487K21 27B2 626 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!