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 27B1 Keyway, Satin Brass

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Model: 606K77 27B1 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 27B1 Keyway in Satin Brass

The Corbin Russwin 606K77 is a 7-Pin Individual X Class cylinder plug engineered specifically for 2-1/2" mortise cylinder applications. Configured with the 27B1 keyway and finished in Satin Brass, this precision replacement plug is designed to integrate seamlessly into compatible Corbin Russwin mortise cylinder assemblies. As a commercial-grade cylinder component, it delivers the exacting tolerances and material quality that professional locksmiths and door hardware installers demand for reliable, long-term performance.

Key Features

  • 7-Pin Configuration: Individual X Class plug with a 7-pin tumbler design for enhanced key control and security depth in commercial mortise applications.
  • Mortise Cylinder Compatibility: Specifically sized for 2-1/2" mortise cylinders, ensuring a precise fit within compatible Corbin Russwin mortise lock assemblies.
  • 27B1 Keyway: Features the 27B1 keyway designation for controlled key section compatibility, supporting organized master key systems and restricted access programs.
  • Satin Brass Finish: Finished in Satin Brass to provide an aesthetically consistent match with coordinating door hardware in commercial environments.
  • Commercial-Grade Replacement Part: Classified as a Corbin Russwin cylinder part and replacement component, purpose-built for professional service and maintenance of existing mortise lock hardware.
  • Genuine Corbin Russwin Cylinder Part: Manufactured to Corbin Russwin specifications as an authentic cylinder component, ensuring compatibility and performance integrity within the original hardware system.

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 27B1
  • Features: Corbin Russwin Cylinder Parts

Typical Applications

  • Commercial Office Buildings with Mortise Lock Systems
  • Educational Facilities Requiring Cylinder Replacement or Rekeying
  • Healthcare Institutions with Controlled Access Mortise Hardware
  • Government and Municipal Buildings Maintaining Existing Mortise Lock Infrastructure
  • Hospitality Properties Servicing Mortise Cylinder Assemblies
  • Retail Establishments with Commercial Mortise Lock Installations
  • Industrial and Warehouse Facilities Performing Scheduled Lock Maintenance

Why Corbin Russwin 606K77?

Corbin Russwin cylinder components are manufactured to meet the exacting standards of professional commercial door hardware, delivering consistent fit and function within the Corbin Russwin mortise lock ecosystem. The 606K77 Individual X Class plug with its 7-pin tumbler system and 27B1 keyway supports organized key control programs essential for commercial facility management. For locksmiths, facilities managers, and hardware professionals, genuine Corbin Russwin replacement parts provide the assurance of purpose-built compatibility and commercial-grade durability.

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 27B1
Features:
Corbin Russwin Cylinder Parts

Corbin Russwin 606K77 27B1 626 – Frequently Asked Questions

1) Will a 27B1 keyway plug work with keys from my other Corbin Russwin cylinders?
Only if those cylinders are also cut in the 27B1 section. The 606K77 27B1 is keyway-specific, and a key blank from a different Corbin Russwin section will not enter it. Locksmiths use this keyway designation to keep a building's master key system consistent, so match the 27B1 marking on the cylinders already in service before ordering.
2) Can a complete mortise cylinder be used instead of the Corbin Russwin 606K77 plug?
They solve different problems. The 606K77 is a 7-pin Individual X Class cylinder plug sized for 2-1/2 inch mortise cylinder applications, meaning it is the plug that drops into an existing Corbin Russwin mortise cylinder shell rather than a complete cylinder. If the shell itself is being replaced, a full mortise cylinder such as the Adams Rite 4036, a Grade 1 mortise cylinder with five-pin security, or the Detex MC65, a 1-1/8 inch 6-pin mortise cylinder with Schlage C keyway, is the whole assembly. Those two carry their own keyways, so they will not run on a 27B1 key section.
3) The opening is a narrow stile aluminum door with an Adams Rite deadlock. Is the 606K77 the right cylinder part?
No. The 606K77 plug is for 2-1/2 inch Corbin Russwin mortise cylinder assemblies. Adams Rite deadlock openings use cylinder pulls matched to the lock: 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, while the 4026 five pin tumbler cylinder pull is designed for the 5017 wood door deadlock/deadlatch. Identify the deadlock model in the stile first.
4) What should I order if the door uses a rim device rather than a mortise lock?
The Corbin Russwin 606K77 plug is built for 2-1/2 inch mortise cylinder applications and will not serve a rim exit device. For rim applications, the Schlage 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam and two keys, and the 20-022 is the same 6-pin rim cylinder with a horizontal tailpiece cam. Cam orientation is dictated by the exit device, so confirm which the device requires before ordering.
5) Is an interchangeable core the same thing as this Corbin Russwin plug?
No. The 606K77 is a 7-pin Individual X Class plug that fits inside a 2-1/2 inch Corbin Russwin mortise cylinder. An interchangeable core is a self-contained keyed unit pulled with a control key from a housing built to accept it: examples are the BEST 1CB, a 1CB Series 150 interchangeable core cylinder, the BEST 1CDF, a drill resistant patented 7-pin brass 150 Series interchangeable core, and the Schlage 20-057, a 6-pin FSIC rim cylinder with convertible tailpiece cam. Those only work in IC-prepped hardware, not in a standard mortise cylinder shell.
6) Can I use this plug in an interchangeable core lock instead of a mortise cylinder?
No. The 606K77 is a mortise cylinder plug, a threaded-shell format, and it does not fit a figure-eight interchangeable core housing. For IC applications look at a core built for that format, such as the BEST 1C Series 5-pin core or the BEST 1CDF drill-resistant 7-pin interchangeable core in the 150 Series. For a full-size interchangeable core in rim format, Schlage's 20-057 is an FSIC cylinder.
7) I need to rekey mortise locks across a building. Is buying plugs the right approach?
It works when the existing 2-1/2 inch mortise cylinder shells are sound and already 7-pin in the 27B1 section: you swap the plug, repin, and reuse the housing and cam. If the shells vary in length or pin count across the building, standardizing on complete cylinders is simpler than sourcing plugs per opening. Plugs also keep the original finish coordination intact, which matters when only some doors are being serviced.
8) I need to rekey a key-in-lever lockset, not a mortise lock. What is the right part?
The 606K77 plug is specific to 2-1/2 inch mortise cylinder assemblies. For key-in-knob or key-in-lever bodies, the Kaba Ilco 1539 is a key-in-knob/lever universal cylinder and the 1599 is a key-in-knob replacement cylinder; the Kaba Ilco 1579 is a knob and lever cylinder made for Sargent locks. The Falcon 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 part to the lock body brand rather than to the mortise plug.
9) Will a 5-pin cylinder work as a substitute for the 7-pin 606K77?
Pin count is part of the key system, not an interchangeable preference. The 606K77 is a 7-pin Individual X Class plug on the 27B1 keyway, which supports a 7-pin master key program. Five-pin options in the same category include the BEST 1C5, a standard 5-pin cylinder core, and the Adams Rite 4036 mortise cylinder with five-pin security. Those run on their own key sections and pinning depths, so keys cut for a 27B1 7-pin system will not operate them.
10) How does the 606K77 differ from the Schlage 20-057-C core?
The 606K77 is a 7-pin Individual X Class cylinder plug with the 27B1 keyway, offered in 606 Satin Brass and 626 Satin Chrome, and it installs into a 2-1/2 inch Corbin Russwin mortise cylinder. The Schlage 20-057-C is a full size interchangeable core cylinder on the C keyway in 643E Aged Bronze. Different key sections and different formats: one is a plug for a mortise shell, the other a removable core for FSIC-prepped hardware.
11) Is the Corbin Russwin 606K77 plug rated for commercial door traffic?
It's a commercial part, not a residential one. The 606K77 is catalogued as a commercial replacement cylinder component and is the part locksmiths use servicing mortise lock hardware in offices, schools, healthcare, hospitality, government buildings and warehouses.
12) I need a non-keyed filler for an opening that does not require locking. What takes the place of the 606K77 there?
The 606K77 is a keyed 7-pin plug on the 27B1 keyway for 2-1/2 inch mortise cylinders, so it always operates with a key. Where no locking function is needed, the BEST 12E Series dummy rim cylinder with a 1-5/32 inch diameter fills the prep without a working key system. That is a rim-format part, so confirm the door prep before substituting.
How fast can I get the Corbin Russwin 606K77 27B1 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 27B1 626 come with a warranty?
Absolutely. The Corbin Russwin 606K77 27B1 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 27B1 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
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