Corbin Russwin 121K11 A1 1-1/8...
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$63.00
$58.70
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Corbin Russwin 121K11 A1 1-1/8" Mortise Cylinder Plug with A Keyway

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Model: 121K11 A1 626

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

$63.00
$58.70
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Corbin Russwin 121K11 A1 1-1/8" Mortise Cylinder Plug with A Keyway

The Corbin Russwin 121K11 A1 is a 1-1/8" mortise cylinder plug featuring an A keyway, engineered as a precision replacement part for compatible Corbin Russwin mortise cylinder assemblies. Designed for commercial door hardware applications, this cylinder plug restores or upgrades the keying functionality of existing mortise cylinders with a dependable, manufacturer-original component. Its 1-1/8" plug dimension ensures accurate fitment in standard mortise cylinder housings used across a wide range of commercial installations.

Key Features

  • Precise 1-1/8" Plug Dimension: The 1-1/8" mortise cylinder plug size ensures accurate, secure fitment in compatible Corbin Russwin mortise cylinder housings for a reliable installation.
  • A Keyway Configuration: Features the Corbin Russwin A keyway profile, providing controlled key interchange and compatibility with existing A keyway key blanks and master key systems.
  • Manufacturer-Original Replacement Part: Sourced directly from Corbin Russwin, this cylinder plug is designed to restore original performance and fit to compatible mortise cylinder assemblies without modifications.
  • Commercial-Grade Construction: Built to Corbin Russwin's commercial hardware standards, this cylinder plug is suited for demanding, high-use door hardware environments.
  • Corbin Russwin Cylinder Compatibility: Designed as part of the Corbin Russwin cylinder parts family, ensuring seamless integration with compatible mortise cylinder bodies and hardware systems.
  • Simplified Maintenance: Enables cost-effective servicing of existing mortise cylinder assemblies by replacing only the plug component rather than the entire cylinder unit.

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 A1
  • Features: Corbin Russwin Cylinder Parts

Typical Applications

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

Why Corbin Russwin 121K11?

Corbin Russwin cylinder parts are manufactured to exacting commercial hardware standards, ensuring that replacement components like the 121K11 A1 cylinder plug deliver the same precision fit and reliable keying performance as the original factory-installed parts. Engineered for demanding commercial applications, this plug integrates seamlessly with compatible Corbin Russwin mortise cylinder assemblies, making it an ideal choice for facilities managers, locksmiths, and door hardware professionals seeking dependable, manufacturer-sourced replacement components.

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 A1
Features:
Corbin Russwin Cylinder Parts

Corbin Russwin 121K11 A1 626 – Frequently Asked Questions

1) Is the Corbin Russwin 121K11 a complete mortise cylinder or just the plug?
It is the plug only, not a full cylinder. The 121K11 is a 1-1/8 inch mortise cylinder plug meant to drop into a compatible Corbin Russwin mortise cylinder housing so you can re-key or repair the cylinder without buying the whole unit. If you need a complete keyed mortise cylinder instead, look at something like the Detex MC65, a 1-1/8 inch 6-pin mortise cylinder in the Schlage C keyway.
2) Which Corbin Russwin keyways can I order the 121K11 plug in?
All 24 of the A-family keyways are available: A1 through A24. Pick the one that matches the keyway already stamped on your existing Corbin Russwin cylinder or specified on your master key system, since the plug has to accept the same key blank as the rest of the opening.
3) Can I keep my existing Corbin Russwin keys if I replace the plug?
Yes, as long as you order the same keyway that is on the door now. The A keyway profile keeps the plug compatible with existing A keyway blanks and master key systems, so a locksmith can pin the new plug to your current bitting and the building keys still work.
4) If I need a complete mortise cylinder instead of just a plug, what should I order?
The Corbin Russwin 121K11 is a mortise cylinder plug - a replacement part that goes into an existing Corbin Russwin mortise cylinder housing rather than a whole cylinder. If the housing itself is damaged or missing, order a full mortise cylinder instead: the Detex MC65 is a 1-1/8 inch 6-pin mortise cylinder with a Schlage C keyway, and the Adams Rite 4036 is a Grade 1 five-pin mortise cylinder. Both are complete cylinder bodies, so keying moves to their keyway rather than the Corbin Russwin A keyway.
5) We want to stop repinning cylinders and move to interchangeable cores - what is the alternative to a Corbin Russwin plug?
The 121K11 plug is serviced by pinning the plug itself inside a Corbin Russwin mortise housing. If the goal is to swap keying without disassembly, an interchangeable-core product is the different approach: the BEST 1CB is a 150 Series interchangeable core cylinder, the BEST 1CDF is a drill-resistant patented 7-pin interchangeable core in the 150 Series, and the Schlage 20-057 is a 6-pin full size interchangeable core rim cylinder with a convertible tailpiece cam. Those require core-compatible housings, so it is a hardware change rather than a drop-in for a Corbin Russwin mortise cylinder.
6) My opening uses a rim exit device, not a mortise lock - is the 121K11 plug the right part?
No. The Corbin Russwin 121K11 is a mortise cylinder plug intended for Corbin Russwin mortise cylinder assemblies. For a rim exit device you need a rim cylinder: 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 tailpiece cam, with the cam orientation chosen to match the device. The BEST 12E Series dummy rim cylinder, at 1-5/32 inch diameter, fills a rim prep where no keying is wanted.
7) I need to rekey a key-in-lever or key-in-knob lock - does this Corbin Russwin plug fit?
No. The Corbin Russwin 121K11 plug serves mortise cylinder assemblies. Key-in-lever and key-in-knob locks take their own cylinder: the Falcon A23161-05 G is a key-in-lever cylinder with a 6-pin G keyway supplied keyed different with two cut keys, the Kaba Ilco 1539 is a key-in-knob/lever universal cylinder, the 1579 is a knob and lever cylinder for Sargent, and the 1599 is a key-in-knob replacement cylinder. Choose by the lock brand the cylinder has to drop into.
8) I manage a building with a mix of lock brands. Can one plug order cover all the mortise cylinders?
No. The 121K11 only services Corbin Russwin mortise cylinders in the A keyway family. Openings with other brands need their own parts, for example a Schlage 20-021 or 20-022 rim cylinder for Schlage rim applications, or a BEST 1C 5-pin core where the doors use BEST interchangeable cores. Inventory by brand, not by door count.
9) Do I need a plug or an interchangeable core to re-key my doors quickly?
A plug like the 121K11 is a bench-level repair: the cylinder comes apart and gets pinned. If you want to re-key in seconds with a control key, you want an interchangeable core system instead, such as the BEST 1C 5-pin core or 1CB Peaks 150 Series core, which pull out of the housing by hand. Plugs make sense when you are keeping the existing Corbin Russwin mortise cylinders in place.
10) Will the 121K11 fit a rim cylinder or a key-in-knob lock?
No. It is a mortise cylinder plug, sized at 1-1/8 inch for mortise cylinder housings. For rim applications look at a dedicated rim cylinder such as the Schlage 20-022 with horizontal tailpiece cam, and for key-in-knob or lever replacement a Kaba Ilco 1599 key-in-knob cylinder is the right category.
11) What is the difference between a cylinder plug and a cylinder core like the BEST 1C5?
The Corbin Russwin 121K11 is a 1-1/8 inch mortise cylinder plug - the keyed barrel that is pinned and fitted into a Corbin Russwin mortise cylinder housing, supplied in A keyways A1 through A24 and 606 satin brass or 626 satin chrome. The BEST 1C5 is a standard 5-pin cylinder core, a removable core unit that seats in core-prepped housings. They are not interchangeable: the plug is a component of a mortise cylinder body, the core is a self-contained keying unit.
12) The opening is a deadbolt, not a mortise lock - what cylinder should I use?
The Corbin Russwin 121K11 is a mortise cylinder plug and is not a deadbolt part. For deadbolts, the Kaba Ilco 1549 is a key-in-deadbolt cylinder, and Medeco offers retrofit options including 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, the 1065244 5-pin rim lazy motion cylinder with an Emtek tailpiece, and the 1075127 5-pin rim lazy motion single cylinder for handlesets and deadbolts.
13) Will the 121K11 plug work in an aluminum storefront door with an Adams Rite deadlock?
The Corbin Russwin 121K11 plug is a component for Corbin Russwin mortise cylinder housings, so it is not the part to order against an Adams Rite deadlock. For those openings the Adams Rite 4036 is a Grade 1 five-pin mortise cylinder with a 1/2 inch minimum door thickness, and cylinder pulls are matched to the lock: the 4024 mounts with a trim plate and the 4025 uses through-screws, both for the MS1847 deadlock/deadlatch, while the 4026 five-pin cylinder pull is for the 5017 wood door deadlock/deadlatch.
14) For a facility standardizing on one keyway, how does the Corbin Russwin A keyway compare with the options on other cylinders?
The Corbin Russwin 121K11 plug is offered across A keyways A1 through A24, which keeps servicing inside a Corbin Russwin A keyway master key system. If the facility standard is Schlage instead, the Schlage 20-057-C is a full size interchangeable core in the C keyway with a 643E aged bronze finish, and the Detex MC65 mortise cylinder is supplied with a Schlage C keyway. Matching the existing keyway across the building is what decides which family to buy into.
15) Is this Corbin Russwin plug rated for commercial traffic or is it a residential part?
Commercial. The 121K11 is built to Corbin Russwin's commercial hardware standards and is specified for offices, schools, healthcare, retail, government buildings, multi-tenant residential, and warehouse facilities.
How fast can I get the Corbin Russwin 121K11 A1 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 A1 626 come with a warranty?
Absolutely. The Corbin Russwin 121K11 A1 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 A1 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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