Corbin Russwin 606K78 7-Pin In...
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$81.02
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Corbin Russwin 606K78 7-Pin Individual X Class Cylinder Plug for 2-3/4" Mortise with 27A2 Keyway, Satin Brass

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Model: 606K78 27A2 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 27A2 Keyway, Satin Brass

The Corbin Russwin 606K78 is a 7-Pin Individual X Class Cylinder Plug engineered for 2-3/4" mortise lock applications. Designed for commercial-grade installations, this replacement plug features the 27A2 keyway and is finished in Satin Brass, making it a precise, factory-compatible component for maintaining or rekeying Corbin Russwin cylinder assemblies. Ideal for facility managers and locksmiths seeking an OEM-quality replacement part.

Key Features

  • 7-Pin X Class Configuration: Individual X Class plug with 7-pin chamber design for enhanced key control and security performance in commercial applications.
  • Mortise Compatibility: Specifically engineered for 2-3/4" mortise lock cylinders, ensuring precise fit and reliable operation with compatible Corbin Russwin hardware.
  • 27A2 Keyway: Factory 27A2 keyway specification ensures proper key blank compatibility and maintains the integrity of existing key systems.
  • Satin Brass Finish: Satin Brass finish provides a professional aesthetic consistent with coordinated commercial door hardware installations.
  • OEM Replacement Part: Genuine Corbin Russwin cylinder component designed to restore or maintain original performance standards in the field.
  • Commercial-Grade Construction: Manufactured to commercial standards as a Corbin Russwin Cylinder Part, suitable for demanding institutional and commercial 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: 606K78 27A2
  • Features: Corbin Russwin Cylinder Parts

Typical Applications

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

Why Corbin Russwin 606K78?

Corbin Russwin cylinder parts are manufactured to exacting commercial standards, delivering the precision fit and key control reliability that professional locksmiths and facility managers depend on. The 606K78 Individual X Class Plug is a factory-quality component that restores original cylinder performance in 2-3/4" mortise applications, ensuring long-term dependability in high-demand 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:
606K78 27A2
Features:
Corbin Russwin Cylinder Parts

Corbin Russwin 606K78 27A2 626 – Frequently Asked Questions

1) Why 7 pins instead of 6 on a Corbin Russwin mortise cylinder plug?
The 7-pin X Class chamber layout is about key control and security level. A 7-pin plug will not take a 6-pin key system, so if your facility is running a 6-pin Corbin Russwin master system this is the wrong plug. Match the pin count to the system already in the building before you order.
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 27A2 keyway. If the rest of your Corbin Russwin system is keyed on 27A2, the key blanks and existing key system carry over. A plug in a different keyway will not accept your current blanks, so the keyway has to match the system you are maintaining.
3) Can I use the 606K78 plug in a rim cylinder or a key-in-knob lock?
No. It is specified for 2-3/4 inch mortise cylinder applications. For rim work use a rim cylinder such as the Schlage 20-021 (6-pin, vertical tailpiece cam) or 20-022 (horizontal cam). For key-in-knob or lever replacement, a Kaba Ilco 1599 key-in-knob cylinder or the 1579 for Sargent knobs and levers is the right family of part.
4) If the whole mortise cylinder needs replacing rather than just the plug, what complete mortise cylinder can be used instead of the Corbin Russwin 606K78?
The 606K78 is a replacement cylinder plug for 2-3/4 inch Corbin Russwin mortise applications, so it restores an existing cylinder body rather than replacing it. When the body itself is damaged or missing, a complete mortise cylinder is the right part instead. 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 six-pin mortise cylinder with a Schlage C keyway. Both are full cylinders, so the key system changes to that cylinder's keyway rather than staying on the Corbin Russwin 27A2 keyway.
5) For a facility that wants to rekey without disassembling cylinders, what is an alternative to stocking Corbin Russwin 606K78 plugs?
The 606K78 is a 7-pin Individual X Class plug that is swapped into the cylinder to maintain or rekey a Corbin Russwin assembly, which means bench work on the cylinder. Interchangeable core hardware avoids that: the BEST 1CB is a 150 Series interchangeable core cylinder, the BEST 1CDF is a drill resistant patented interchangeable core 7-pin brass 150 Series core, and the Schlage 20-057-C is a full size interchangeable core in the C keyway. Those cores pull with a control key instead of being rebuilt, but they require hardware prepped for interchangeable cores rather than the Corbin Russwin mortise cylinder the 606K78 serves.
6) What should be used instead of the Corbin Russwin 606K78 on a key-in-lever or key-in-knob lockset?
The 606K78 plug serves 2-3/4 inch mortise cylinders, not the smaller cylinders used inside knob and lever locks. For those, the Kaba Ilco 1539 Series is a key-in-knob and lever universal cylinder, the 1599 is a key-in-knob replacement cylinder, the 1579 is a knob and lever cylinder for Sargent, and the Falcon A23161-05 G is a key-in-lever cylinder with a 6-pin G keyway supplied keyed different with two cut keys. Those are complete cylinders for knob and lever bodies rather than a plug for a mortise cylinder.
7) We want to standardize cylinders across a facility with interchangeable cores. Is this plug the right approach?
No, this is a fixed 7-pin plug for Corbin Russwin mortise cylinders, rekeyed at the bench. If you want cores you can swap by hand across a site, look at an interchangeable core line instead: the BEST 1CB 150 Series IC cylinder, the BEST 1CDF drill-resistant patented 7-pin core, or a Schlage 20-057 6-pin FSIC rim cylinder with convertible tailpiece cam.
8) Is a rim cylinder like the Schlage 20-021 a substitute for the Corbin Russwin 606K78?
No. The 606K78 is a cylinder plug for 2-3/4 inch mortise lock cylinders. The Schlage 20-021 and 20-022 are rim cylinders, with the 20-021 using a vertical tailpiece cam and the 20-022 a horizontal tailpiece cam, and the Schlage 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam. Rim cylinders mount through the door behind rim exit devices and are a different cylinder format from a mortise cylinder, so they do not drop into a mortise lock prep.
9) For a deadbolt or handleset that needs a keyed cylinder, is the Corbin Russwin 606K78 the right part?
The 606K78 is a mortise cylinder plug for commercial Corbin Russwin cylinder assemblies, so it is not intended for residential-style deadbolts and handlesets. Cylinders built for that duty include the Kaba Ilco 1549 Series key-in-deadbolt cylinder, the Medeco 1012040 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the Medeco 1065140 5-pin retrofit cylinder for Arrow JL interconnected locks and Emtek handleset and deadbolt outside cylinders, the Medeco 1065244 5-pin lazy motion rim cylinder with Emtek tailpiece, and the Medeco 1075127 5-pin rim type lazy motion single cylinder for handlesets and deadbolts.
10) What is the difference between the Corbin Russwin 606K78 7-pin plug and a 5-pin core like the BEST 1C5?
The 606K78 is a 7-pin Individual X Class plug with a seven-chamber design and the 27A2 keyway, sold as a plug that goes into a Corbin Russwin 2-3/4 inch mortise cylinder. The BEST 1C5 is a standard 5-pin cylinder core from the Standard and Premium Cores line, and the BEST 1CDF is a 7-pin interchangeable core. Pin count changes the key bitting and keying capacity, and the plug versus core distinction changes how the part is installed: the 606K78 is fitted into an existing cylinder while a core drops into interchangeable core hardware.
11) On an Adams Rite MS1847 narrow stile door, what cylinder hardware is used instead of the Corbin Russwin 606K78?
The 606K78 plug is built for 2-3/4 inch Corbin Russwin mortise cylinders and does not address narrow stile aluminum door pulls. For Adams Rite MS1847 deadlock and deadlatch systems, the Adams Rite 4024 cylinder pull mounts with a trim plate and the Adams Rite 4025 is a five pin tumbler cylinder pull using through-screws. For wood doors with the Adams Rite 5017 deadlock or deadlatch, the 4026 five pin tumbler cylinder pull applies.
12) Is this Corbin Russwin plug suitable for a high-traffic commercial building?
Yes. It is built as a commercial-grade component and is used in office buildings, schools, hospitals, government facilities, retail, warehouses, and multi-tenant residential. It is an OEM Corbin Russwin cylinder part, so it restores the original cylinder rather than substituting an aftermarket plug into a keyed system.
13) For an opening that only needs the look of a cylinder with no key function, is there an option other than the Corbin Russwin 606K78?
Yes. The 606K78 is a functional 7-pin plug that carries the 27A2 keyway and supports key control in a live cylinder. Where no keying is wanted, the BEST 12E Series dummy rim cylinder with a 1-5/32 inch diameter provides the cylinder appearance without an operating mechanism, and the Emtek CY4 cylinder is sold as an individual part. The 606K78 remains the choice when the cylinder has to be keyed into an existing Corbin Russwin 27A2 system.
How fast can I get the Corbin Russwin 606K78 27A2 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 27A2 626 come with a warranty?
Absolutely. The Corbin Russwin 606K78 27A2 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 27A2 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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