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 57B1 Keyway, Satin Brass

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Model: 606K78 57B1 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 57B1 Keyway, Satin Brass

The Corbin Russwin 606K78 is a 7-Pin Individual X Class Cylinder Plug designed specifically for use with 2-3/4" mortise cylinders and featuring the 57B1 keyway configuration. Finished in Satin Brass, this genuine Corbin Russwin replacement cylinder part is engineered for commercial-grade mechanical lock systems. It delivers a precise, reliable fit for maintenance, rekeying, and cylinder rebuilding applications in professional door hardware installations.

Key Features

  • 7-Pin Configuration: Features a 7-pin tumbler design for enhanced key security and a broader key combination range in commercial locking applications.
  • X Class Individual Plug: Designed as an Individual X Class plug, providing precise compatibility within the Corbin Russwin cylinder system for accurate rekeying and servicing.
  • Mortise Cylinder Compatibility: Engineered specifically for 2-3/4" mortise cylinder applications, ensuring a proper fit in standard commercial mortise lock preparations.
  • 57B1 Keyway: Configured with the 57B1 keyway for compatibility with the corresponding Corbin Russwin key blanks and master key systems.
  • Satin Brass Finish: Satin Brass finish provides a professional aesthetic appropriate for commercial door hardware environments.
  • Genuine Corbin Russwin Cylinder Part: An authentic Corbin Russwin component, ensuring proper tolerances, material quality, and system compatibility for reliable long-term performance.
  • Commercial-Grade Application: Designed for use in commercial mechanical lock systems as a replacement part for cylinder maintenance and service.

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 57B1
  • 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 and Mixed-Use Properties

Why Corbin Russwin 606K78?

Corbin Russwin cylinder parts are manufactured to precise tolerances to ensure proper fit and reliable performance within Corbin Russwin lock systems. The 606K78 7-Pin Individual X Class Plug is a genuine replacement component, making it the trusted choice for locksmiths, facilities managers, and door hardware professionals requiring accurate, dependable cylinder service parts for commercial mechanical lock applications.

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 57B1
Features:
Corbin Russwin Cylinder Parts

Corbin Russwin 606K78 57B1 626 – Frequently Asked Questions

1) Is the Corbin Russwin 606K78 a complete cylinder or just the plug?
It is the plug only. The 606K78 is a 7-pin Individual X Class cylinder plug meant for rebuilding or rekeying a 2-3/4 inch Corbin Russwin mortise cylinder, not a finished cylinder you can thread into a lock body. If you need a whole cylinder assembly, order that instead; this part goes on the bench, not into the door as-is.
2) What keyway does the Corbin Russwin 606K78 plug come in, and will it work with my existing keys?
The plug is cut for the 57B1 keyway, so it accepts Corbin Russwin 57B1 key blanks and can be pinned into an existing 57B1 master key system. If the building is keyed in a different Corbin Russwin keyway, this plug will not take those keys, since the keyway is machined into the plug and cannot be changed.
3) If I need a complete mortise cylinder rather than just a replacement plug, what should I order instead of the Corbin Russwin 606K78?
The 606K78 is a 7-pin Individual X Class cylinder plug for 2-3/4 inch mortise cylinders with the 57B1 keyway - it is the plug alone, used for rekeying and cylinder rebuilding, not a complete cylinder. If the opening needs a whole mortise cylinder, the Adams Rite 4036 is a complete 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 commercial mortise cylinder in the Schlage C keyway. Both are full cylinders that thread into the lock case; the 606K78 goes inside a cylinder you already have.
4) Can I use a BEST interchangeable core in place of the Corbin Russwin 606K78 plug?
No - they solve the problem differently. The 606K78 is a pinned plug that goes into an existing Corbin Russwin 2-3/4 inch mortise cylinder housing in the 57B1 keyway. BEST small format interchangeable cores such as the 1C Series standard 5-pin core, the 1CB 150 Series Peaks core, or the 1CDF drill resistant patented 7-pin brass core are removable cores that require a housing prepped for interchangeable core. If your facility is standardizing on IC so cores can be swapped with a control key, the BEST cores are the path; if you are rebuilding existing Corbin Russwin conventional cylinders, the 606K78 plug is.
5) What do I order if the door takes a rim cylinder instead of a mortise cylinder?
The 606K78 plug is built for 2-3/4 inch mortise cylinder applications, so it will not serve a rim device. For rim openings, 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.
6) Does a 7-pin plug matter if my Corbin Russwin system is 6-pin?
Yes, it matters. The 606K78 is a 7-pin plug, chambered for seven tumblers. A 7-pin plug belongs in a 7-pin cylinder keyed in a 7-pin system; dropping it into 6-pin hardware is a mismatch of chamber count and key bitting length. Confirm the existing cylinders are 7-pin 57B1 before you buy.
7) I need a whole cylinder, not a rebuild part. What else does ZenSupply carry?
If you want a complete unit rather than a plug, look at full cylinders instead. The Adams Rite 4036 is a Grade 1 five-pin mortise cylinder. On the rim side, Schlage Commercial 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam and 20-022 is the same with a horizontal cam. For interchangeable-core systems, the Schlage 20-057 is a 6-pin FSIC rim cylinder. None of those are keyed to Corbin Russwin 57B1, so they suit new keying rather than matching an existing Corbin Russwin system.
8) If I want interchangeable cores so I can rekey without a locksmith on the bench, what should I look at instead?
An individual plug like the 606K78 has to be pinned by hand, which is why locksmiths use it. If your goal is swapping cores in the field, an interchangeable-core product fits better: BEST 1CB is a 150 Series interchangeable core, the BEST 1CDF is a drill-resistant patented 7-pin interchangeable core in brass, and the BEST 1C5 is a standard 5-pin core. Those are BEST keyways, not Corbin Russwin 57B1, so switching means rekeying the openings.
9) I am rekeying knob and lever locks, not mortise locks. Is the 606K78 the right part?
No. The 606K78 is a mortise cylinder plug for 2-3/4 inch Corbin Russwin mortise cylinders. For key-in-knob and key-in-lever work, the Kaba Ilco 1539 Series is a universal key-in-knob/lever cylinder, the 1579 Series is a knob and lever cylinder for Sargent locks, and the 1599 is a key-in-knob replacement cylinder. Falcon also offers the A23161-05 G key-in-lever cylinder for the RU/T series with a 6-pin G keyway, keyed different with two cut keys.
10) What is the equivalent to the 606K78 if I want a full size interchangeable core system instead of conventional pinning?
The 606K78 is a conventional plug pinned into a Corbin Russwin 2-3/4 inch mortise cylinder in the 57B1 keyway. For a full size interchangeable core approach, the Schlage 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam and two keys, and the 20-057-C is a full size interchangeable core cylinder in the C keyway with a 643E Aged Bronze finish. FSIC lets maintenance pull and replace the core with a control key rather than repinning a plug at the bench.
11) Will the Corbin Russwin 606K78 work in an Adams Rite storefront deadlock?
Not directly. The 606K78 is a plug for Corbin Russwin 2-3/4 inch mortise cylinders in the 57B1 keyway. Adams Rite storefront hardware is served by its own parts: the 4024 cylinder pull with trim plate mounting and the 4025 five pin tumbler cylinder pull with through-screws are both designed for the MS1847 deadlock/deadlatch, the 4026 five pin tumbler cylinder pull is for the 5017 wood door deadlock/deadlatch, and the 4036 is a Grade 1 mortise cylinder in the 4036 Series. Confirm which deadlock is in the door before choosing.
12) For a deadbolt or handleset retrofit, is the 606K78 an option?
No - it is a commercial mortise cylinder plug, not a deadbolt cylinder. Deadbolt and handleset retrofits are covered by parts like the Medeco 1012040, a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts; the 1065140, a 5-pin retrofit cylinder for the Arrow JL interconnected lock and Emtek handleset and deadbolt outside cylinder; the 1065244, a 5-pin lazy motion rim type cylinder with an Emtek tailpiece; and the 1075127, a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts. The Kaba Ilco 1549 Series is a key-in-deadbolt cylinder as well.
13) What finishes is the 606K78 7-pin plug available in?
Two: 606 Satin Brass and 626 Satin Chrome. Match the plug to the cylinder collar and the surrounding trim, since the plug face is the part that shows through the cylinder.
14) Is the 606K78 plug suitable for commercial buildings or is it a residential part?
Commercial. It is specified for commercial mechanical lock systems and is used in offices, schools, healthcare, government buildings, retail, warehouses, and multi-tenant residential. Facilities keeping a stock of rekeying parts for Corbin Russwin openings use plugs like this rather than replacing whole cylinders.
15) I need a non-keyed filler for a rim opening, not a working plug. What takes the place of the 606K78 there?
The 606K78 is a functioning 7-pin plug meant to be pinned to the 57B1 keyway and operated by a key. If the opening only needs the look of a cylinder with no keying, the BEST 12E Series dummy rim cylinder with a 1-5/32 inch diameter fills a rim prep without any locking function.
16) Does the finish choice on the 606K78 have a match among comparable cylinders?
The 606K78 plug is offered in 606 Satin Brass and 626 Satin Chrome, so it can be matched to the trim on most commercial openings. Among comparable cylinders, the Schlage 20-057-C full size interchangeable core is listed in 643E Aged Bronze, which is a darker finish family; if you are trying to keep a floor visually consistent, confirm the finish of the surrounding trim before mixing the two.
How fast can I get the Corbin Russwin 606K78 57B1 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 57B1 626 come with a warranty?
Absolutely. The Corbin Russwin 606K78 57B1 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 57B1 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 606K78 57B1 626 from ZenSupply?
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