Corbin Russwin 121K11 H1 1-1/8...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$63.00
$58.70
Image coming soon

Corbin Russwin 121K11 H1 1-1/8" Mortise Cylinder Plug with H Keyway

(No reviews yet) Write a Review

Model: 121K11 H1 626

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

$63.00
$58.70
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 121K11 H1 1-1/8" Mortise Cylinder Plug with H Keyway

The Corbin Russwin 121K11 H1 is a 1-1/8" mortise cylinder plug featuring the H keyway, engineered as a precision replacement component for compatible Corbin Russwin mortise cylinder assemblies. Designed for commercial door hardware applications, this cylinder plug delivers reliable key control and smooth operation in demanding institutional and commercial environments. As a genuine Corbin Russwin cylinder part, it is built to exact manufacturer specifications for direct compatibility with existing Corbin Russwin mortise cylinder hardware.

Key Features

  • Precise Dimensions: 1-1/8" mortise cylinder plug size ensures accurate fitment within compatible Corbin Russwin mortise cylinder housings.
  • H Keyway Configuration: Features the Corbin Russwin H keyway for controlled key access and compatibility with corresponding H keyway key blanks and key systems.
  • Genuine Replacement Part: Manufactured to Corbin Russwin specifications as an authentic cylinder component, ensuring performance consistency with the original assembly.
  • Commercial-Grade Construction: Engineered for commercial applications where reliable, long-term cylinder performance is required.
  • Direct Compatibility: Designed for use with compatible Corbin Russwin mortise cylinder assemblies, simplifying service, rekeying, and maintenance operations.
  • Simplified Serviceability: Allows field replacement of the cylinder plug without full cylinder assembly replacement, reducing maintenance costs and downtime.

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: 121K11 H1
  • Features: Corbin Russwin Cylinder Parts

Typical Applications

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

Why Corbin Russwin 121K11?

Corbin Russwin cylinder components are manufactured to exacting commercial-grade standards, ensuring that replacement parts like the 121K11 H1 plug integrate seamlessly with existing hardware. Engineered for professional door hardware applications, this mortise cylinder plug supports reliable key control and consistent performance in high-use commercial environments where dependable security hardware is essential.

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:
121K11 H1
Features:
Corbin Russwin Cylinder Parts

Corbin Russwin 121K11 H1 626 – Frequently Asked Questions

1) Can I use this plug in a residential deadbolt or a Schlage cylinder?
No. The 121K11 is a commercial Corbin Russwin part and is cut for Corbin Russwin mortise cylinder housings and the H keyway family. It will not go into a Schlage body or a residential deadbolt. For a Schlage-keyway job, the Detex MC65 is a 1-1/8 inch six-pin mortise cylinder with a Schlage C keyway, and Schlage's own 20-021 and 20-022 cover rim cylinder applications.
2) If the whole Corbin Russwin mortise cylinder is worn out, not just the plug, what complete 1-1/8 inch mortise cylinder can be used instead?
The Corbin Russwin 121K11 H1 is a 1-1/8 inch mortise cylinder plug, a replacement component intended to go back into an existing Corbin Russwin mortise cylinder housing. If the housing itself is damaged, a complete mortise cylinder is the right call instead: the Detex MC65 is a 1-1/8 inch 6-pin mortise cylinder supplied with a Schlage C keyway, and the Adams Rite 4036 is a five-pin mortise cylinder rated Grade 1. Both are full cylinders rather than plugs, so keys will be on their own keyway rather than the Corbin Russwin H system.
3) Is a BEST 1C interchangeable core the same thing as a Corbin Russwin 121K11 plug?
No. The 121K11 H1 is a mortise cylinder plug with a Corbin Russwin H keyway that is fitted inside a compatible Corbin Russwin mortise cylinder assembly. The BEST 1C5 is a standard 5-pin interchangeable core, and the BEST 1CB is a 150 Series interchangeable core cylinder - those drop into BEST-style figure-eight core housings and are removed with a control key, a different retention method entirely. They are not interchangeable with a Corbin Russwin mortise plug.
4) What should I order if the door needs a rim cylinder rather than a mortise plug?
The Corbin Russwin 121K11 H1 is a mortise cylinder plug and will not serve a rim device. For rim applications, the Schlage 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam supplied with two keys, and the 20-022 is the same 6-pin rim cylinder with a horizontal tailpiece cam. Match the cam orientation to what the exit device or rim lock requires.
5) I want to move a facility to interchangeable core instead of rebuilding plugs. What should I look at?
A conventional plug like the 121K11 has to be pinned and installed by a locksmith each time. If you would rather pull and swap cores by hand, the BEST 1C Series standard 5-pin core or the 1CB 150 Series interchangeable core cylinder are the small-format route, and Schlage's 20-057 six-pin FSIC rim cylinder with convertible tailpiece cam covers full-size interchangeable core openings. Changing systems means rekeying the whole facility, so it is a decision to make across a building, not one door.
6) Does the Corbin Russwin 121K11 plug come keyed, or do I have to pin it myself?
It is supplied as a cylinder component for a locksmith to pin to your keying system. That is the advantage of buying the plug: you set the bitting to your existing masterkey system and the key control stays yours. Specify the H section that matches your blanks when you order.
7) My cylinder is worn but the housing is fine. Do I need a whole new cylinder?
Not necessarily. Replacing just the plug restores key operation without pulling and replacing the full mortise cylinder assembly, which keeps the housing, cam and ring in the door. That is the intended use of the 121K11: field service on an existing 1-1/8 inch Corbin Russwin mortise cylinder.
8) We want cores we can swap without pulling the cylinder. What is the alternative to a fixed mortise plug?
The 121K11 H1 is a plug that is serviced inside the mortise cylinder body, which suits facilities standardizing on Corbin Russwin H keyway hardware. If you want core-swap keying 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 20-057-C is a full size interchangeable core in the C keyway with a 643E Aged Bronze finish. The BEST 1CDF is a drill-resistant patented 7-pin interchangeable core in brass, 150 Series.
9) Will a Corbin Russwin 121K11 plug work in a key-in-lever or key-in-knob lock?
No. The 121K11 H1 is a mortise cylinder plug for Corbin Russwin mortise cylinder assemblies, not a knob or lever cylinder. For key-in-lever and key-in-knob work, the Falcon A23161-05 G is a key-in-lever cylinder for the RU/T series with a 6-pin G keyway, keyed different with two cut keys; the Kaba Ilco 1539 is a universal key-in-knob and lever cylinder, the 1579 is a knob and lever cylinder for Sargent, and the 1599 is a key-in-knob replacement cylinder.
10) The opening is an aluminum storefront with an Adams Rite deadlock. Is the 121K11 the right cylinder part?
The 121K11 H1 is a Corbin Russwin mortise cylinder plug and is not matched to Adams Rite storefront hardware. For an Adams Rite MS1847 deadlock or deadlatch, the 4024 cylinder pull mounts with a trim plate and the 4025 is a five-pin tumbler cylinder pull using through-screws. For a wood door, the 4026 five-pin tumbler cylinder pull is built for the Adams Rite 5017 wood door deadlock or deadlatch.
11) Is this the right part for standardizing key control across a school or hospital?
Yes, if the facility is already on Corbin Russwin H keyway hardware. Buying plugs in one section across the building keeps every mortise cylinder on the same key system and lets maintenance rebuild cylinders in place instead of replacing assemblies. The part is a commercial-duty component used in office, education, healthcare, government, multi-tenant and industrial settings.
12) What is the difference between the 121K11 plug and a residential deadbolt retrofit cylinder?
The Corbin Russwin 121K11 H1 is specified for commercial use as a replacement mortise cylinder plug. The residential-style retrofit cylinders serve different locks entirely: the Medeco 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the 1065140 is a 5-pin retrofit cylinder for the Arrow JL interconnected lock and Emtek handleset and deadbolt outside cylinder, the 1065244 is a 5-pin lazy motion rim type cylinder with an Emtek tailpiece, and the 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts.
13) I need a non-keyed cylinder for a pull-only door. Is there an alternative to a keyed plug?
The Corbin Russwin 121K11 H1 is a keyed mortise cylinder plug with the H keyway, so it is built for key control rather than appearance only. Where no key function is needed, the BEST 12E Series dummy rim cylinder with a 1-5/32 inch diameter fills the prep without keying. The Emtek CY4 cylinder is sold individually as a parts item for Emtek hardware.
14) For a keyed deadbolt cylinder replacement, what are the options compared to the 121K11?
The 121K11 H1 is a mortise cylinder plug, not a deadbolt cylinder. Kaba Ilco lists deadbolt-function cylinders for that work: the 1549 Series is a key-in-deadbolt cylinder, and the 1539, 1579 and 1599 Series are also catalogued with a deadbolt product function. Those replace the cylinder in a deadbolt or interconnected lock rather than going inside a Corbin Russwin mortise housing.
How fast can I get the Corbin Russwin 121K11 H1 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 121K11 H1 626 come with a warranty?
Absolutely. The Corbin Russwin 121K11 H1 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 121K11 H1 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 121K11 H1 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.
!