Corbin Russwin 606K78 7-Pin In...
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Corbin Russwin 606K78 7-Pin Individual X Class Cylinder Plug for 2-3/4" Mortise with 67B2 Keyway in Satin Brass

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Model: 606K78 67B2 626

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

$94.00
$81.02
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Corbin Russwin 606K78 7-Pin Individual X Class Cylinder Plug for 2-3/4" Mortise with 67B2 Keyway in Satin Brass

The Corbin Russwin 606K78 is a 7-Pin Individual X Class cylinder plug designed as a precision replacement part for 2-3/4" mortise lock applications. Featuring the 67B2 keyway and a Satin Brass finish, this commercial-grade plug integrates seamlessly with compatible Corbin Russwin mortise cylinder assemblies. Engineered for dependable performance in demanding commercial door hardware environments, this cylinder plug is a genuine Corbin Russwin component suitable for professional locksmithing and facility maintenance applications.

Key Features

  • 7-Pin Configuration: Individual X Class 7-pin plug design delivers enhanced key control and security for commercial mortise applications.
  • Mortise Compatibility: Specifically engineered for 2-3/4" mortise cylinders, ensuring proper fit and reliable operation within compatible Corbin Russwin assemblies.
  • 67B2 Keyway: Proprietary 67B2 keyway provides controlled key access and helps restrict unauthorized key duplication for added security.
  • Satin Brass Finish: Satin Brass finish offers a professional aesthetic that complements a wide range of commercial door hardware configurations.
  • Genuine Corbin Russwin Component: Manufactured as an authentic Corbin Russwin cylinder part, ensuring precise tolerances and compatibility with existing Corbin Russwin mortise hardware.
  • Commercial-Grade Construction: Designed to meet the rigorous demands of commercial door hardware applications, supporting reliable long-term operation in high-traffic facilities.
  • Drop-In Replacement: Serves as a direct replacement plug for compatible Corbin Russwin mortise cylinder assemblies, simplifying maintenance and service procedures.

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: 606K78 67B2
  • 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 606K78?

Corbin Russwin cylinder parts are manufactured to exact tolerances, ensuring consistent performance and compatibility within Corbin Russwin mortise lock systems. The 606K78 7-Pin X Class plug delivers the precision engineering and commercial-grade reliability that facility managers and locksmiths depend on for professional service and long-term security performance.

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:
606K78 67B2
Features:
Corbin Russwin Cylinder Parts

Corbin Russwin 606K78 67B2 626 – Frequently Asked Questions

1) Is the Corbin Russwin 606K78 a complete mortise cylinder or just the plug?
It's the plug only, not a full cylinder. The 606K78 is a 7-pin Individual X Class cylinder plug meant to drop into a compatible Corbin Russwin 2-3/4 inch mortise cylinder assembly. If you need the whole cylinder, housing, cam and all, order a complete mortise cylinder instead. For a full 1-1/8 inch mortise cylinder in another brand, the Detex MC65 is a 6-pin commercial mortise cylinder with a Schlage C keyway.
2) What does the 67B2 keyway mean for keying this plug into my building's master system?
67B2 is a proprietary Corbin Russwin keyway, which is what gives you key control, duplicates are restricted. Practically, that means the plug only keys into a system already running 67B2. If your facility is standardized on a different Corbin Russwin keyway, the plug won't accept those keys and you'd need the matching keyway instead.
3) My opening uses a rim exit device, not a mortise lock. Can I use the 606K78?
No. This plug is built for a 2-3/4 inch mortise cylinder, which is a different body and cam arrangement from a rim cylinder. For rim applications look at the Schlage 20-021 (6-pin, vertical tailpiece cam) or 20-022 (6-pin, horizontal tailpiece cam), choosing the cam orientation the device calls for.
4) If I need a complete mortise cylinder instead of just the plug, what should I order?
The Corbin Russwin 606K78 is a 7-pin cylinder plug for 2-3/4 inch mortise applications with the 67B2 keyway - it is the plug itself, not a finished cylinder housing. If the opening needs a whole mortise cylinder, the Adams Rite 4036 is a mortise cylinder with five-pin security, listed as Grade 1 in the 4036 series, and the Detex MC65 is a 1-1/8 inch 6-pin mortise cylinder cut to the Schlage C keyway. Both are complete cylinders rather than a replacement plug, so they do not carry the Corbin Russwin 67B2 keyway.
5) Is a rim cylinder an acceptable substitute for the 606K78 mortise plug?
No. The Corbin Russwin 606K78 is a 7-pin plug for 2-3/4 inch mortise cylinders and threads into a mortise case prep. Rim cylinders such as the Schlage 20-021, a 6-pin rim cylinder with a vertical tailpiece cam, and the Schlage 20-022, the same 6-pin rim cylinder with a horizontal tailpiece cam, mount through the door face and drive a rim device with a tailpiece. The two preps are not interchangeable.
6) We want keying we can rekey without pulling the lock - what is the alternative to a fixed 7-pin plug?
The Corbin Russwin 606K78 is an individual X Class 7-pin plug that is pinned and serviced as a plug inside the mortise cylinder. For a system where the keying element pulls out with a control key, look at interchangeable core products: the BEST 1CB is a 150 series interchangeable core cylinder, the BEST 1CDF is a drill resistant patented interchangeable core 7-pin brass 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. These require a matching core-prepped housing rather than a conventional mortise cylinder.
7) Is a 7-pin plug more secure than a 6-pin for a commercial building?
The extra chamber raises the number of possible key combinations, which matters most for master keying depth and key control in a larger facility. Corbin Russwin lists the 606K78 as a 7-pin Individual X Class plug on that basis. If your existing cylinders are 6-pin, though, stay 6-pin, the plug has to match the housing it goes into.
8) I need to rekey a Corbin Russwin mortise lock without pulling the whole lock, is this the part?
Yes, swapping the plug is the standard way to rekey without disturbing the mortise case. You pull the cylinder from the lock body, change out the 7-pin X Class plug, and reinstall. The 606K78 is sold as a direct replacement plug for compatible Corbin Russwin 2-3/4 inch mortise cylinders.
9) Can I use this instead of an interchangeable core if I want fast rekeying across a facility?
No. The 606K78 is a conventional plug, so rekeying means taking the cylinder apart. If you want to swap cores by hand with a control key, go interchangeable core instead, the BEST 1CB 150 Series interchangeable core cylinder or the 7-pin BEST 1CDF drill resistant patented core cover that approach. Schlage's 20-057 is a 6-pin FSIC rim cylinder if the application is rim rather than mortise.
10) What exactly do I order, and what is the model designation?
The model is 606K78 with the 67B2 keyway, and you choose the finish, 606 Satin Brass or 626 Satin Chrome. Specify the keyway explicitly when ordering, since the plug is keyway-specific and 67B2 is what determines whether your existing keys operate it.
11) What is the simpler option if I only need 5-pin keying rather than a 7-pin plug?
The Corbin Russwin 606K78 is a 7-pin plug, which supports deeper masterkeying. Where a 5-pin conventional cylinder is acceptable, the BEST 1C5 is a standard 5-pin cylinder core and the Adams Rite 4036 is a mortise cylinder with five-pin security. Neither accepts the Corbin Russwin 67B2 keyway, so they suit a new or separate keying system rather than matching existing 67B2 keys.
12) Can I use the 606K78 plug in a key-in-lever or knob lock?
No. The 606K78 is built for 2-3/4 inch mortise cylinder assemblies. Key-in-knob and key-in-lever bodies take a different cylinder format: the Falcon A23161-05 G is a key-in-lever cylinder in the RU/T series with a 6-pin G keyway supplied keyed different with two cut keys, the Kaba Ilco 1539 is a key-in-knob and lever universal cylinder, and the Kaba Ilco 1579 is a knob and lever cylinder for Sargent locks. Match the cylinder to the lock chassis, not to the mortise plug.
13) I need a keyed cylinder for an aluminum storefront door - is this the right part?
The Corbin Russwin 606K78 is a mortise cylinder plug for commercial mortise lock assemblies. For narrow stile storefront hardware, the Adams Rite line addresses it directly: the 4024 is a cylinder pull with trim plate mounting and the 4025 is a five pin tumbler cylinder pull with through-screws, both for the MS1847 deadlock/deadlatch, while the 4026 is a five pin tumbler cylinder pull for wood door applications with the 5017 wood door deadlock/deadlatch.
14) For a residential deadbolt or handleset, what should I use instead of this Corbin Russwin plug?
The 606K78 is a commercial mortise plug. Residential deadbolt and handleset retrofits are served by the Medeco cylinders: the 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.
15) Is this plug rated for residential or commercial use?
Commercial. Corbin Russwin builds the 606K78 for commercial mortise lock service, and it shows up in office buildings, schools, healthcare, government facilities, retail, warehouses and multi-tenant residential. It is not a homeowner-grade part.
16) Is the 606K78 a genuine Corbin Russwin part or aftermarket?
Genuine Corbin Russwin. It is built as an authentic Corbin Russwin cylinder component, which is why the tolerances line up with existing Corbin Russwin mortise hardware rather than needing fitting.
17) What looks like a cylinder but will not key anything?
The BEST 12E series dummy rim cylinder with a 1-5/32 inch diameter is a non-functioning filler for openings that need the appearance of a cylinder, so it is not a substitute for a keyed part. The Corbin Russwin 606K78 is a working 7-pin X Class plug with the 67B2 keyway for 2-3/4 inch mortise cylinders and is the part to order when the door has to be keyed.
18) Does the finish choice on the 606K78 match what the comparable cylinders offer?
The Corbin Russwin 606K78 plug is offered in 606 Satin Brass and 626 Satin Chrome. Among the comparable cylinders, the Schlage 20-057-C full size interchangeable core cylinder with the C keyway is specified in 643E Aged Bronze, so if the other hardware on the opening is a darker bronze the appearance will not match a satin brass or satin chrome plug.
How fast can I get the Corbin Russwin 606K78 67B2 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 606K78 67B2 626 come with a warranty?
Absolutely. The Corbin Russwin 606K78 67B2 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 606K78 67B2 626?
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