Corbin Russwin 121K11 1-1/8 in...
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$63.00
$58.70
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Corbin Russwin 121K11 1-1/8 in. Mortise Cylinder Plug with N Keyway

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Model: 121K11 N1 626

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

$63.00
$58.70
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Corbin Russwin 121K11 1-1/8 in. Mortise Cylinder Plug with N Keyway

The Corbin Russwin 121K11 N1 is a 1-1/8" mortise cylinder plug featuring the N keyway, designed as a precision replacement part for compatible Corbin Russwin mortise cylinder assemblies. This commercial-grade cylinder plug is engineered to restore or configure mortise lock cylinders with the correct keyway specification, ensuring proper key control and reliable operation in demanding door hardware applications.

Key Features

  • Precise 1-1/8" Plug Dimension: Machined to a 1-1/8" mortise cylinder plug size for accurate fitment within compatible Corbin Russwin mortise cylinder housings.
  • N Keyway Configuration: Features the Corbin Russwin N keyway profile for proper key control and system compatibility within N keyway master key systems.
  • Commercial-Grade Construction: Engineered to Corbin Russwin's commercial standards, delivering dependable performance in high-demand door hardware installations.
  • Genuine Corbin Russwin Cylinder Part: An authentic Corbin Russwin cylinder component, ensuring OEM-level fit, function, and compatibility with existing hardware assemblies.
  • Replacement Part Application: Designed for use as a direct replacement plug within compatible mortise cylinder assemblies, supporting field servicing and lock rekeying operations.
  • Mortise Lock Compatibility: Suitable for integration with Corbin Russwin mortise cylinder configurations used in commercial mechanical lock applications.

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 N1
  • Features: Corbin Russwin Cylinder Parts

Typical Applications

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

Why Corbin Russwin 121K11?

Corbin Russwin cylinder parts are manufactured to exacting commercial standards, making the 121K11 N1 mortise cylinder plug a reliable choice for facility managers and locksmiths requiring genuine OEM replacement components. With the correct 1-1/8" plug dimension and N keyway profile, this part ensures consistent, professional-grade performance across Corbin Russwin mortise lock installations where precision fit and key control integrity are 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 N1
Features:
Corbin Russwin Cylinder Parts

Corbin Russwin 121K11 N1 626 – Frequently Asked Questions

1) What exactly is the Corbin Russwin 121K11 part, a whole cylinder or just the plug?
It is the plug only, not a complete cylinder. The 121K11 is a 1-1/8 inch mortise cylinder plug with a Corbin Russwin N keyway, sold as a replacement component that goes into a compatible Corbin Russwin mortise cylinder housing. If you need a full assembly to install in a lock, order a complete mortise cylinder instead; this part is for rebuilding or rekeying a cylinder you already have.
2) Which N keyways can I get the Corbin Russwin 121K11 plug in?
All 28 N-series keyways are offered: N1 through N28. Pick the one that matches the existing key system so the plug drops into your master key hierarchy without recutting keys. Ordering the wrong N number gives you a plug your building keys will not enter.
3) Will a 121K11 plug fit a Schlage C keyway mortise cylinder?
No. The 121K11 is cut for the Corbin Russwin N keyway and fits Corbin Russwin mortise cylinder housings. For a Schlage C keyway mortise cylinder, the Detex MC65 is a 1-1/8 inch 6-pin commercial mortise cylinder in Schlage C, and it ships as a complete cylinder rather than a plug.
4) If I need a complete 1-1/8 in. mortise cylinder rather than just the plug, what is a comparable option?
The Corbin Russwin 121K11 is a 1-1/8 in. mortise cylinder plug - the keyed plug component that goes into an existing Corbin Russwin mortise cylinder housing, offered in N1 through N28 keyways. If the whole cylinder is needed instead of the plug alone, the Detex MC65 is a complete 1-1/8 in. mortise cylinder with a Schlage C keyway and 6-pin construction, and the Adams Rite 4036 is a mortise cylinder with five-pin security in the 4036 series. Both are full cylinders, so they key to their own keyway rather than into a Corbin Russwin N system.
5) I want to rekey without pinning plugs in the field - what should I look at instead?
The Corbin Russwin 121K11 plug is pinned to a chosen N keyway, so changing keying means servicing the plug itself. For facilities that want to swap keying by hand, interchangeable core products are the alternative: the BEST 1C series is a standard 5-pin cylinder core, the BEST 1CB is a 150 series interchangeable core cylinder, and the Schlage 20-057 is a 6-pin full size interchangeable core rim cylinder with a convertible tailpiece cam. Those systems pull a core with a control key rather than rebuilding the plug.
6) I need a cylinder for an Adams Rite MS1847 deadlock - can I use the Corbin Russwin 121K11?
No. The 121K11 is a mortise cylinder plug for Corbin Russwin mortise cylinder assemblies. For the Adams Rite MS1847 deadlock or deadlatch, the matched items are the Adams Rite 4024 cylinder pull with trim plate mounting and the Adams Rite 4025 five pin tumbler cylinder pull with through-screws. For an Adams Rite 5017 wood door deadlock or deadlatch, the 4026 five pin tumbler cylinder pull is the wood door version.
7) I manage a building keyed on Corbin Russwin N keyway. Can I use these plugs to rekey doors myself?
That is what the part is for. The 121K11 plug lets a locksmith rebuild an existing Corbin Russwin mortise cylinder to a different N keyway or repin it for a new key system, rather than buying whole cylinders for every door. Keep the keyway number consistent across the openings you want on one key system. It is a commercial-grade part intended for field service work, so it comes with no keys or pins.
8) If I want an interchangeable core system instead of rebuilding mortise cylinders, what should I look at?
A plug like the 121K11 means pulling and repinning the cylinder every time keying changes. If you would rather swap cores with a control key, look at small format interchangeable core products such as the BEST 1C Series standard 5-pin core or the 1CB 150 Series interchangeable core cylinder, or Schlage's full size interchangeable core route with the 20-057 FSIC rim cylinder. Those are a different key system, not a retrofit of an N keyway mortise cylinder, so the change is a facility-wide decision.
9) Can I use this plug in a rim cylinder or a key-in-knob cylinder?
No. The 121K11 is sized as a 1-1/8 inch mortise cylinder plug and belongs in a mortise cylinder housing. For rim applications, the Schlage 20-021 (vertical tailpiece cam) and 20-022 (horizontal tailpiece cam) are 6-pin rim cylinders; for knob and lever cylinders, Kaba Ilco's 1539 Series key-in-knob/lever universal cylinder covers that side.
10) Can I use a rim cylinder in place of a mortise cylinder plug?
No. The Corbin Russwin 121K11 is a mortise cylinder plug for Corbin Russwin mortise cylinder assemblies. Rim cylinders such as the Schlage 20-021 (6-pin, vertical tailpiece cam) and the Schlage 20-022 (6-pin, horizontal tailpiece cam) drive a tailpiece through the door into rim-mounted hardware, and the BEST 12E series dummy rim cylinder is a 1-5/32 in. diameter rim body. These mount differently and do not thread into a mortise lock cylinder housing.
11) Will the 121K11 plug work in a key-in-lever or key-in-knob lock?
The Corbin Russwin 121K11 is dimensioned as a 1-1/8 in. mortise cylinder plug for mortise cylinder housings. Key-in-lever and key-in-knob locks take their own cylinder format: the Falcon A23161-05 G is a key-in-lever cylinder for the RU/T series with a 6-pin G keyway, the Kaba Ilco 1539 is a key-in-knob and lever universal cylinder, the 1579 is a knob and lever cylinder for Sargent, and the 1599 is a key-in-knob replacement cylinder. Those are not interchangeable with a mortise plug.
12) What is the difference between the 121K11 plug and a deadbolt cylinder?
The Corbin Russwin 121K11 is a commercial mortise cylinder plug supplied in 606 satin brass and 626 satin chrome and in N1 through N28 keyways, used to restore or rekey a Corbin Russwin mortise cylinder. Deadbolt cylinders are separate items keyed for bolt hardware: the Kaba Ilco 1549 is a key-in-deadbolt cylinder with a deadbolt function, and the Medeco 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts. Choose by the lock body the cylinder is going into.
13) Is there a higher-security alternative if key duplication is the concern?
The 121K11 plug provides key control through the Corbin Russwin N keyway family, N1 through N28, so keys stay inside that system. If drill and duplication resistance is the driving requirement, the BEST 1CDF is a drill resistant patented interchangeable core with 7-pin brass construction in the 150 series, and Medeco offers patented retrofit cylinders such as the 1065140 5-pin retrofit cylinder for Arrow JL interconnected locks and Emtek handlesets. Those are different cylinder formats, so the lock body determines which applies.
14) Is the 121K11 a genuine Corbin Russwin part or an aftermarket copy?
Genuine Corbin Russwin. Model designation is 121K11 N1 for the N1 keyway version, and it is an OEM cylinder component, which matters on the plug because the keyway profile and plug diameter have to match the housing and the existing keys exactly.
How fast can I get the Corbin Russwin 121K11 N1 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 N1 626 come with a warranty?
Absolutely. The Corbin Russwin 121K11 N1 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 N1 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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