Corbin Russwin 606K77 7-Pin In...
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Corbin Russwin 606K77 7-Pin Individual X Class Cylinder Plug for 2-1/2" Mortise with 57A2 Keyway

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Model: 606K77 57A2 626

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

$94.00
$81.02
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Corbin Russwin 606K77 7-Pin Individual X Class Cylinder Plug for 2-1/2" Mortise with 57A2 Keyway

The Corbin Russwin 606K77 is a 7-Pin Individual X Class replacement cylinder plug engineered specifically for 2-1/2" mortise lock cylinders. Designed for commercial-grade applications, this plug features the 57A2 keyway and a Satin Brass finish, making it a precise factory-compatible component for maintaining and servicing Corbin Russwin cylinder assemblies. Its X Class specification ensures a high level of key control and security, suited for institutional and commercial environments requiring reliable access management.

Key Features

  • 7-Pin Configuration: Features a 7-pin tumbler stack for enhanced key complexity and security performance in commercial lock cylinders.
  • X Class Security: Individual X Class plug designation provides elevated key control to restrict unauthorized key duplication.
  • Mortise Compatibility: Engineered for use with 2-1/2" mortise lock cylinders, ensuring precise fit and reliable operation in standard commercial mortise applications.
  • 57A2 Keyway: Configured with the 57A2 keyway for compatibility with Corbin Russwin keying systems and key blanks.
  • Satin Brass Finish: Finished in Satin Brass to complement coordinated commercial door hardware installations.
  • Genuine Corbin Russwin Cylinder Part: An authentic Corbin Russwin cylinder component, ensuring OEM-level fit, finish, and performance within existing hardware systems.
  • Commercial-Grade Construction: Designed and rated for commercial applications where consistent, dependable cylinder performance is required.

Typical Applications

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

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: 606K77 57A2
  • Features: Corbin Russwin Cylinder Parts

Why Corbin Russwin 606K77?

Corbin Russwin cylinder components are manufactured to exacting commercial standards, delivering OEM-grade reliability for mortise lock systems in demanding institutional environments. The 606K77 plug's 7-pin, X Class engineering provides a higher level of key control than standard cylinders, making it a trusted choice for security-conscious facility managers and locksmiths who require genuine replacement parts that maintain the integrity of their Corbin Russwin hardware 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:
606K77 57A2
Features:
Corbin Russwin Cylinder Parts

Corbin Russwin 606K77 57A2 626 – Frequently Asked Questions

1) Will the 606K77 plug work in my Corbin Russwin cylinder if my keys are a different keyway?
No. The 606K77 is built around the 57A2 keyway, so it only accepts keys cut on 57A2 blanks and only integrates with a 57A2 keying system. Pull one of your existing keys and confirm the keyway stamp before ordering, because a plug in the wrong keyway will not take your key at all.
2) Can I use this plug to rekey a Schlage or BEST mortise lock?
No. The 606K77 is a Corbin Russwin component cut for the 57A2 keyway and a Corbin Russwin 2-1/2 inch mortise cylinder body, so it won't drop into another manufacturer's cylinder. For Schlage-keyed work, a Schlage cylinder such as the 20-021 rim cylinder is the brand-correct route; for a BEST small-format core, the 1C Series 5-pin core is the BEST-side part.
3) I need a complete mortise cylinder, not just a plug - what should I order instead of the Corbin Russwin 606K77?
The 606K77 is a replacement cylinder plug for 2-1/2 inch Corbin Russwin mortise cylinders, so it goes into an existing cylinder shell rather than replacing the whole cylinder. If the opening needs a complete mortise cylinder, the Adams Rite 4036 is a five-pin mortise cylinder in the 4036 Series rated Grade 1, and the Detex MC65 is a 1-1/8 inch six-pin mortise cylinder with a Schlage C keyway. Both are whole cylinders you thread into the lock case; the 606K77 is the keyed plug alone.
4) Is a BEST interchangeable core an equivalent to the Corbin Russwin 606K77 X Class plug?
They solve the same problem in different systems. The 606K77 is a 7-pin X Class plug that drops into a 2-1/2 inch Corbin Russwin mortise cylinder and keys to the 57A2 keyway. BEST handles rekeying through removable cores instead: the BEST 1C5 is a standard 5-pin cylinder core, the 1CB is a 150 Series interchangeable core, and the 1CDF is a drill-resistant patented 7-pin interchangeable core in brass, also 150 Series. A BEST core requires a BEST-prepped housing, so it is not a drop-in for a Corbin Russwin mortise cylinder shell.
5) My exit device takes a rim cylinder - can I use the 606K77?
No. The 606K77 is a plug for a 2-1/2 inch mortise cylinder and will not serve a rim application. For rim openings, Schlage's 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam and the 20-022 is the same cylinder with a horizontal tailpiece cam, both supplied with two keys. The Schlage 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam if you want the core removable.
6) What does X Class mean on a Corbin Russwin 7-pin cylinder plug?
X Class is Corbin Russwin's Individual key control designation. On the 606K77 it means the plug and its 7-pin stack are part of a restricted keying program, so key blanks aren't freely duplicated at a hardware counter. Facilities that need to control who can copy a key (schools, hospitals, government buildings) are the usual buyers.
7) Why choose a 7-pin plug over a standard 6-pin cylinder?
More pin chambers means more usable key differs and deeper masterkeying levels, which is why 7-pin shows up in large institutional systems. The 606K77 uses a 7-pin tumbler stack. A 6-pin mortise cylinder like the Detex MC65 in Schlage C keyway is the simpler alternative when you only need a single keyed opening and no restricted key control.
8) I manage a building with mixed Corbin Russwin mortise locks. Do all of them take this plug?
Only the ones using 2-1/2 inch mortise cylinders in the 57A2 keyway. The 606K77 is a factory replacement plug for that combination. Openings running a different cylinder length or a different Corbin Russwin keyway need the plug matched to those, so inventory your cylinders by length and keyway stamp before you standardize on one part number.
9) For an aluminum storefront with an Adams Rite deadlock, do I order the 606K77?
No - the 606K77 plug serves 2-1/2 inch Corbin Russwin mortise cylinders. Storefront deadlocks are handled by dedicated parts: the Adams Rite 4024 is a cylinder pull with trim plate mounting for MS1847 deadlock/deadlatch systems, the 4025 is a five-pin tumbler cylinder pull with through-screws for the same MS1847, and the 4026 is a five-pin cylinder pull for the 5017 wood door deadlock/deadlatch. The Adams Rite 4036 mortise cylinder is five-pin, Grade 1, with a 1/2 inch minimum door thickness.
10) I have key-in-lever locks, not mortise locks - what cylinder do I use?
Key-in-knob and key-in-lever locks take a different cylinder body than the 2-1/2 inch mortise cylinder the 606K77 plug fits. Kaba Ilco's 1539 Series is a key-in-knob/lever universal cylinder, the 1579 Series is a knob and lever cylinder for Sargent locks, and the 1599 is a key-in-knob replacement cylinder. Falcon's A23161-05 G is a key-in-lever cylinder for RU/T Series with a 6-pin G keyway, keyed different and supplied with two cut keys.
11) What is a simpler option than the 7-pin X Class 606K77 if I do not need restricted key control?
The 606K77 uses a 7-pin stack with X Class individual key control to limit unauthorized key duplication. Where a facility does not need restricted keying, five- and six-pin conventional cylinders cover the same openings: the Adams Rite 4036 is a five-pin Grade 1 mortise cylinder, the Detex MC65 is a six-pin mortise cylinder in Schlage C keyway, and the BEST 1C5 is a standard 5-pin core. Those run on standard key blanks rather than a controlled keyway.
12) What high-security cylinders compare to the 606K77 X Class for a facility upgrade?
The 606K77 delivers key control through its 7-pin X Class plug on the Corbin Russwin 57A2 keyway. For comparable restricted-key hardware in other systems, the BEST 1CDF is a drill-resistant preferred patented interchangeable core with 7 pins in brass, 150 Series. Medeco offers patented-key retrofit cylinders for residential-style hardware, such as the 1012040 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts. The 606K77 keeps you inside the Corbin Russwin system; the others require their own keyways and housings.
13) What finishes does the Corbin Russwin 606K77 plug come in?
Two: 606 Satin Brass and 626 Satin Chrome. Match the plug face to the rest of the cylinder and the trim on the door, since the plug is the visible part of the keyhole. Satin Chrome is the one to pick if the building is standardized on brushed nickel or stainless-look hardware.
14) Is this an OEM Corbin Russwin part or an aftermarket copy?
Genuine Corbin Russwin. The 606K77 is an authentic cylinder component, which matters on X Class work because a restricted keyway program depends on factory-controlled plugs and blanks. It's catalogued as a commercial replacement part rather than a residential item.
15) Which of these cylinder parts are for deadbolts rather than mortise locks like the 606K77?
The 606K77 is a mortise cylinder plug for commercial Corbin Russwin lock cylinders. Deadbolt-specific cylinders in the same family of parts include the Kaba Ilco 1549 Series key-in-deadbolt cylinder, and Medeco's retrofit cylinders: the 1065140 5-pin for Arrow JL interconnected locks and Emtek handleset and deadbolt outside cylinders, the 1065244 5-pin rim lazy motion cylinder with Emtek tailpiece, and the 1075127 5-pin rim type lazy motion single cylinder for handlesets and deadbolts.
16) I need a non-keyed filler for a mortise prep - is the 606K77 the right part?
No. The 606K77 is a functioning keyed plug carrying a 7-pin X Class stack on the 57A2 keyway. When an opening needs a cylinder that fills the hole without operating, the BEST 12E Series dummy rim cylinder with 1-5/32 inch diameter is the dummy option in that group of parts.
17) Does the 606K77 finish choice have an equivalent in other brands' cylinders?
The 606K77 plug is offered in 606 Satin Brass and 626 Satin Chrome so it coordinates with existing Corbin Russwin trim. Among comparable cylinders, the Schlage 20-057-C is a full size interchangeable core cylinder in C keyway with a 643E Aged Bronze finish, which is a darker tone than either 606K77 option. Match the finish to the lock trim already on the door rather than to the cylinder it replaces in another system.
How fast can I get the Corbin Russwin 606K77 57A2 626 delivered?
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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 606K77 57A2 626 come with a warranty?
Absolutely. The Corbin Russwin 606K77 57A2 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 606K77 57A2 626?
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