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 57A1 Keyway, Satin Brass

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Model: 606K78 57A1 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 57A1 Keyway

The Corbin Russwin 606K78 is a 7-Pin Individual X Class Cylinder Plug designed specifically for 2-3/4" mortise lock applications. Featuring the 57A1 keyway and a Satin Brass finish, this genuine Corbin Russwin replacement part is engineered for professional-grade reliability in commercial door hardware installations. As a direct Corbin Russwin cylinder component, it ensures compatibility and performance consistent with the original lock system specifications.

Key Features

  • 7-Pin X Class Configuration: Individual X Class plug design provides enhanced key control and security performance for commercial mortise cylinder applications.
  • Mortise Compatibility: Engineered for 2-3/4" mortise lock installations, ensuring precise fitment with compatible Corbin Russwin mortise hardware.
  • 57A1 Keyway: Factory-specified 57A1 keyway maintains keyway integrity and compatibility with existing Corbin Russwin key systems.
  • Satin Brass Finish: Satin Brass finish coordinates with complementary door hardware for a consistent, professional aesthetic.
  • Genuine Corbin Russwin Component: Authentic cylinder part designed and manufactured to Corbin Russwin specifications for seamless integration with compatible lock systems.
  • Commercial-Grade Construction: Built to meet the demands of high-traffic commercial environments where dependable locking performance is essential.

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 57A1
  • 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 engineered to exact manufacturing tolerances, ensuring reliable key control and smooth operation within compatible mortise lock systems. The 606K78 plug's 7-pin X Class configuration delivers the security performance expected of commercial-grade hardware, making it a dependable choice for facility managers and locksmiths maintaining Corbin Russwin lock systems.

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 57A1
Features:
Corbin Russwin Cylinder Parts

Corbin Russwin 606K78 57A1 626 – Frequently Asked Questions

1) Will a 57A1 keyway plug work in my existing Corbin Russwin key system?
Only if your system is already on the 57A1 keyway. Keyways are not interchangeable: a 57A1 plug accepts 57A1 blanks and nothing else, so pulling the keyway code off an existing key or the lock records is the first step. Matching it keeps the new plug on the same Corbin Russwin master key system you already run.
2) Does a 7-pin X Class plug fit a 6-pin Corbin Russwin cylinder?
No. The 606K78 is built as a 7-pin plug for the X Class system and it has to go into a 7-pin X Class housing with matching chambers. A 6-pin cylinder needs a 6-pin plug; forcing the wrong pin count leaves you with a cylinder that will not key or turn.
3) If I need a complete mortise cylinder rather than just a plug, what should I order instead of the Corbin Russwin 606K78?
The 606K78 is a cylinder plug - the keyed plug component that goes inside a Corbin Russwin mortise cylinder, supplied with the 57A1 keyway. If you need a whole mortise cylinder to thread into the lock body, look at the Detex MC65, a 1-1/8 inch 6-pin mortise cylinder in the Schlage C keyway, or the Adams Rite 4036 mortise cylinder, a five-pin Grade 1 unit in the 4036 Series. Both are complete cylinders, not plugs, so they do not carry the 57A1 keyway and will not key into an existing Corbin Russwin 57A1 system.
4) Is there an interchangeable core option instead of a fixed 7-pin plug like the 606K78?
The 606K78 is a fixed 7-pin Individual X Class plug for 2-3/4 inch Corbin Russwin mortise applications - rekeying means pinning the plug. If the facility wants cores that swap by control key, the BEST 1CDF is a drill resistant patented interchangeable core with 7 pins in brass, 150 Series; the BEST 1CB Peaks is a 150 Series interchangeable core; and the BEST 1C5 is a standard 5-pin core. On the Schlage side, the 20-057-C is a full size interchangeable core in the C keyway. These are core systems, so the housings and keying differ from a Corbin Russwin 57A1 plug.
5) I have knob or lever locks, not mortise locks - what cylinder do I use instead?
The Corbin Russwin 606K78 plug is for 2-3/4 inch mortise cylinder applications and will not fit key-in-knob or key-in-lever hardware. For those, the Kaba Ilco 1539 is a universal key-in-knob/lever cylinder, the 1579 is a knob and lever cylinder for Sargent, and the 1599 is a key-in-knob replacement cylinder. The Falcon A23161-05 G is a key-in-lever cylinder for RU/T series with a 6-pin G keyway, keyed different with two cut keys.
6) I need to rekey Schlage or BEST cylinders too. Can I use this Corbin Russwin plug?
No, it's brand and system specific to Corbin Russwin X Class. For Schlage, the 20-057 full size interchangeable core is the rekeyable path, and for BEST the 1C 5-pin core or the 1CDF drill resistant 7-pin core covers the interchangeable core side. Keep each manufacturer's system separate unless you are moving the whole facility to one keyway.
7) What is the exact model to order for the 7-pin X Class mortise plug in 57A1?
The model designation is 606K78 57A1 from Corbin Russwin, with the finish called out separately as 606 Satin Brass or 626 Satin Chrome. Give your supplier the keyway code and the finish together, since the same plug body is offered on both finishes.
8) I have a rim exit device, not a mortise lock. Is this the right cylinder part?
No. The 606K78 plug is for 2-3/4 inch mortise cylinder applications. A rim device takes a rim cylinder with a tailpiece, for example the Schlage 20-021 with a vertical tailpiece cam or the 20-022 with a horizontal cam, and the cam orientation has to match the device.
9) Will a Schlage rim cylinder work in place of the Corbin Russwin 606K78?
No. The 606K78 is a plug for a 2-3/4 inch mortise cylinder application. Schlage's 20-021 and 20-022 are rim cylinders, differing from each other in tailpiece cam orientation - vertical on the 20-021 and horizontal on the 20-022 - and the 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam. Rim cylinders mount through the door behind a rim exit device or rim deadlock, a different prep entirely from a threaded mortise cylinder body.
10) What is the equivalent part for a deadbolt rather than a mortise lock?
The 606K78 plug serves Corbin Russwin mortise cylinders. For deadbolt keying, the Kaba Ilco 1549 is a key-in-deadbolt cylinder and the Medeco 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts. The Medeco 1012040 is a 6-pin lazy motion rim cylinder specifically for Kwikset single cylinder deadbolts, and the 1065140 is a 5-pin retrofit cylinder for Arrow JL interconnected locks and Emtek handleset and deadbolt outside cylinders.
11) For an aluminum storefront door, is the 606K78 the right cylinder part?
No - the 606K78 is a keyed plug for 2-3/4 inch Corbin Russwin mortise cylinders in commercial door hardware. Narrow stile storefront work usually calls for Adams Rite parts: the 4024 cylinder pull with trim plate mounting and the 4025 five pin tumbler cylinder pull with through-screws both serve the MS1847 deadlock/deadlatch, while the 4026 five pin tumbler cylinder pull is for the 5017 wood door deadlock/deadlatch. The Adams Rite 4036 is a Grade 1 five-pin mortise cylinder with a 1/2 inch minimum door thickness.
12) Is this plug suitable for high-traffic commercial doors, or is it a residential part?
Commercial. The 606K78 is classed as commercial door hardware and is the plug locksmiths and facility maintenance staff use to rekey or repair Corbin Russwin mortise cylinders in offices, schools, hospitals, government buildings, retail, warehouses, and multi-tenant residential.
13) I only need a cylinder that fills the hole and does not key - what is a simpler option than the 606K78?
The 606K78 is a functioning 7-pin keyed plug with the 57A1 keyway for Corbin Russwin mortise cylinders. If the opening only needs the appearance of a cylinder with no keying, the BEST 12E Series dummy rim cylinder has a 1-5/32 inch diameter and is a dummy, not an operating cylinder. It is a rim-format part, so confirm your prep before substituting.
14) Does the finish choice on the 606K78 plug have an equivalent among other cylinder parts?
The Corbin Russwin 606K78 plug is offered in 606 Satin Brass and 626 Satin Chrome. Among comparable cylinder parts, the Schlage 20-057-C full size interchangeable core is listed in 643E Aged Bronze, a darker finish that will not match a satin brass or satin chrome trim package. Match the plug finish to the surrounding Corbin Russwin mortise hardware.
How fast can I get the Corbin Russwin 606K78 57A1 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 57A1 626 come with a warranty?
Absolutely. The Corbin Russwin 606K78 57A1 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 57A1 626?
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