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 77A2 Keyway

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Model: 606K77 77A2 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 77A2 Keyway

The Corbin Russwin 606K77 77A2 is a 7-pin Individual X Class cylinder plug engineered specifically for 2-1/2" mortise cylinder applications. Finished in Satin Brass, this commercial-grade replacement part is designed for use with the 77A2 keyway and delivers reliable, precision-fit performance in professional door hardware installations. Manufactured as an authentic Corbin Russwin cylinder component, it is the trusted choice for maintaining the integrity of existing keying systems.

Key Features

  • 7-Pin Configuration: Features a 7-pin Individual X Class plug design for enhanced key control and security in commercial mortise cylinder applications.
  • Mortise Compatibility: Engineered specifically for 2-1/2" mortise cylinders, ensuring a precise, drop-in fit for compatible Corbin Russwin hardware.
  • 77A2 Keyway: Designed exclusively for the 77A2 keyway, maintaining keyway-specific key control and system integrity across an installation.
  • Satin Brass Finish: Finished in Satin Brass for a refined, professional appearance consistent with commercial door hardware aesthetics.
  • Genuine Corbin Russwin Component: An authentic Corbin Russwin cylinder part, ensuring quality, dimensional accuracy, and system compatibility.
  • Commercial-Grade Construction: Built to the standards of Corbin Russwin's commercial cylinder product line for lasting durability in demanding environments.

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 77A2
  • Features: Corbin Russwin Cylinder Parts

Typical Applications

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

Why Corbin Russwin 606K77?

Corbin Russwin cylinder components are manufactured to exacting commercial standards, delivering the dimensional precision and material quality required for reliable key control in professional door hardware systems. The 606K77 77A2 plug is engineered as an authentic replacement part, preserving the performance and security integrity of existing Corbin Russwin mortise cylinder installations in demanding commercial environments.

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 77A2
Features:
Corbin Russwin Cylinder Parts

Corbin Russwin 606K77 77A2 626 – Frequently Asked Questions

1) Is the Corbin Russwin 606K77 a complete cylinder or just the plug?
It's just the plug, the rotating keyed core that sits inside a 2-1/2 inch Corbin Russwin mortise cylinder shell. If you need a whole cylinder rather than the plug alone, this is not the part to order. Buy it when you're rebuilding or re-keying an existing mortise cylinder and the housing is staying in the door.
2) Will the 606K77 plug work in my Corbin Russwin mortise cylinder if my keys are a different keyway?
No. The 606K77 77A2 plug is cut for the 77A2 keyway only, so it will only accept 77A2 keys. Dropping it into a system keyed to any other Corbin Russwin keyway breaks the master keying on that opening. Match the keyway stamped on your existing plug before ordering.
3) I need a whole mortise cylinder, not just a keyed plug - what should I order instead of the Corbin Russwin 606K77?
The 606K77 77A2 is a replacement cylinder plug, a 7-pin Individual X Class plug for 2-1/2 inch Corbin Russwin mortise cylinders, so it goes into a cylinder shell you already have. If you need a complete mortise cylinder assembly, the Adams Rite 4036 is a Grade 1 mortise cylinder with five-pin security 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 full cylinders rather than plugs, and neither carries the 77A2 keyway, so they start a separate key system rather than joining an existing Corbin Russwin one.
4) Is a BEST interchangeable core the same idea as the Corbin Russwin 606K77 plug?
They solve the same problem in different ways. The 606K77 77A2 is a 7-pin Individual X Class plug that is rekeyed or swapped inside an existing 2-1/2 inch Corbin Russwin mortise cylinder. BEST interchangeable core products are removable cores instead: the 1CB is a Peaks 150 series interchangeable core cylinder, the 1CDF is a drill resistant patented interchangeable core 7-pin brass 150 series core, and the 1C5 is a standard 5-pin cylinder core. Cores pull out with a control key; the 606K77 plug is a cylinder component and is not interchangeable with a BEST core housing.
5) My exit device takes a rim cylinder - can I use the Corbin Russwin 606K77?
No. The 606K77 77A2 plug is built for 2-1/2 inch mortise cylinders, which thread into a mortise lock or cylinder collar. For rim applications, the Schlage 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam and two keys, the 20-022 is the same 6-pin rim cylinder with a horizontal tailpiece cam, and the 20-057 is a 6-pin full size interchangeable core rim cylinder with a convertible tailpiece cam. Tailpiece orientation is what your device dictates, so confirm vertical versus horizontal before ordering.
6) What finishes does the Corbin Russwin 606K77 plug come in?
Two: 606 Satin Brass and 626 Satin Chrome. Pick the one matching the cylinder ring and lock trim already on the door so the visible plug face doesn't stand out on a building where the rest of the openings are one finish.
7) What does Individual X Class mean for keying this plug?
Individual keying means the plug is keyed on its own rather than being part of a master key system, and X Class is the Corbin Russwin key control level it's pinned to. Use it where one door needs its own key; if the opening has to fall under an existing master, the plug needs to be keyed into that system instead.
8) Is this the same thing as an interchangeable core?
No. The 606K77 is a fixed plug for a 2-1/2 inch mortise cylinder, pinned and installed as part of that cylinder. An interchangeable core pulls out with a control key, and that's a different product line: BEST 1C Series 5-pin cores or the 1CDF drill resistant 7-pin core, for example. If your facility is standardized on IC cores, the plug is the wrong format.
9) What do I use for a key-in-lever or key-in-knob lock instead of the 606K77 mortise plug?
The 606K77 77A2 is a mortise cylinder plug and will not fit a key-in-knob or key-in-lever chassis. For those, the Kaba Ilco 1539 is a universal key-in-knob and lever cylinder, the 1599 is a key-in-knob replacement cylinder, and the 1579 is a knob and lever cylinder made for Sargent locks. Falcon's A23161-05 G is a key-in-lever cylinder in the RU/T series with a 6-pin G keyway, keyed different with two cut keys. Match the cylinder to the lock chassis brand rather than to the mortise plug.
10) Aluminum storefront with an Adams Rite MS1847 deadlock - does the Corbin Russwin 606K77 apply?
Not directly. The 606K77 77A2 is a 7-pin plug for 2-1/2 inch Corbin Russwin mortise cylinders. On an MS1847 deadlock or deadlatch, the cylinder pull is the matched part: the Adams Rite 4024 is a cylinder pull with trim plate mounting for MS1847 systems and the 4025 is a five pin tumbler cylinder pull with through-screws for the same deadlock. If the door is wood with a 5017 deadlock, the 4026 is the five pin tumbler cylinder pull for that application.
11) Which cylinders look like substitutes for the 606K77 but will not work in a Corbin Russwin mortise housing?
Several parts sit close in the catalog but serve other hardware. The BEST 12E is a dummy rim cylinder with a 1-5/32 inch diameter, so it is not keyed at all. Medeco retrofit cylinders are built to specific residential-style hardware: the 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the 1065140 is a 5-pin retrofit for Arrow JL interconnected locks and Emtek handlesets and deadbolts, and the 1065244 is a 5-pin lazy motion rim cylinder with an Emtek tailpiece. The Emtek CY4 is likewise an Emtek parts cylinder. None of these carry the 77A2 keyway or the 2-1/2 inch Corbin Russwin mortise format the 606K77 plug is made for.
12) If I want to standardize a facility on removable cores instead of keeping the 606K77 plug system, what are my options?
The 606K77 77A2 plug preserves an existing Corbin Russwin 77A2 keyway system and is serviced by rekeying or replacing the plug. To move to field-serviceable cores, the Schlage 20-057-C is a full size interchangeable core cylinder in the C keyway with a 643E Aged Bronze finish, and BEST offers 150 series interchangeable cores including the 1CDF drill resistant patented 7-pin brass core. Converting means new keys throughout, since those cores do not use the 77A2 keyway.
13) Is the 606K77 plug rated for commercial traffic in schools and hospitals?
It's a commercial-duty Corbin Russwin cylinder part, built for the kind of service you see in office buildings, schools, healthcare, government facilities, retail and multi-tenant residential. It is a replacement component, so it's meant to bring an existing cylinder back to spec rather than to be specified new on a drawing.
14) Does the Corbin Russwin 606K77 come in a chrome finish or only brass?
The 606K77 77A2 7-pin plug is offered in 606 Satin Brass and 626 Satin Chrome, so it can be matched to either brass or chrome mortise trim. Among comparable cylinders, the Schlage 20-057-C full size interchangeable core is specified in 643E Aged Bronze.
15) Is a deadbolt cylinder an acceptable stand-in for the 606K77?
No. The 606K77 77A2 is a plug for 2-1/2 inch Corbin Russwin mortise cylinders. Deadbolt-specific cylinders are separate parts: 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. Those go into deadbolt bodies, not into a mortise lock cylinder shell.
How fast can I get the Corbin Russwin 606K77 77A2 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 606K77 77A2 626 come with a warranty?
Absolutely. The Corbin Russwin 606K77 77A2 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 77A2 626?
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