Corbin Russwin 606K79 7-Pin In...
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$97.00
$83.18
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Corbin Russwin 606K79 7-Pin Individual X Class Cylinder Plug for 3" Mortise with 77A2 Keyway

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Model: 606K79 77A2 626

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

$97.00
$83.18
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Corbin Russwin 606K79 7-Pin Individual X Class Cylinder Plug for 3" Mortise with 77A2 Keyway

The Corbin Russwin 606K79 is a 7-Pin Individual X Class Cylinder Plug engineered specifically for 3" mortise cylinder applications. Featuring the 77A2 keyway and delivered in a Satin Brass finish, this commercial-grade replacement part is designed to integrate seamlessly with compatible Corbin Russwin mortise cylinder housings. Built to the exacting standards of Corbin Russwin's cylinder parts line, this plug provides reliable pin tumbler security for demanding commercial door hardware installations.

Key Features

  • 7-Pin Configuration: Individual X Class plug with 7-pin tumbler design for enhanced key control and security in commercial applications.
  • 3" Mortise Compatibility: Engineered specifically for use with 3" mortise cylinders, ensuring proper fit and function within compatible Corbin Russwin housings.
  • 77A2 Keyway: Utilizes the 77A2 keyway profile for precise key compatibility and consistent operation with corresponding Corbin Russwin key blanks and bitting.
  • Satin Brass Finish: Factory-applied Satin Brass finish provides a refined appearance and corrosion resistance suited to commercial environments.
  • X Class Security: Individual X Class designation ensures controlled key duplication and elevated access security for commercial facilities.
  • Genuine Corbin Russwin Cylinder Part: Manufactured as an authentic Corbin Russwin cylinder component, designed for direct replacement and full compatibility with the parent mortise cylinder system.
  • Commercial-Grade Construction: Produced to commercial hardware standards, making this plug appropriate for high-use door hardware installations across a wide range of facility types.

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: 606K79 77A2
  • 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 606K79?

Corbin Russwin cylinder parts are manufactured to precise commercial tolerances, ensuring that replacement components like the 606K79 plug deliver consistent, reliable performance within the parent mortise cylinder assembly. The X Class designation reflects a commitment to key control integrity, making this plug a trusted choice for facility managers and locksmiths maintaining access security across commercial installations.

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:
606K79 77A2
Features:
Corbin Russwin Cylinder Parts

Corbin Russwin 606K79 77A2 626 – Frequently Asked Questions

1) Is the Corbin Russwin 606K79 a complete mortise cylinder or just the plug?
It is the plug only, not a complete cylinder. The 606K79 is a 7-pin Individual X Class cylinder plug meant to drop into a compatible Corbin Russwin 3 inch mortise cylinder housing. If you need a whole cylinder with housing, cam, and keys, order a full mortise cylinder instead. If you already have the housing on the door and are rekeying or converting the keyway, the plug is the part you want.
2) What keyway does the Corbin Russwin 606K79 plug use, and can I key it into my existing system?
The plug is cut for the 77A2 keyway. It will accept Corbin Russwin 77A2 key blanks and can be pinned into an existing 77A2 masterkey system. If your facility runs a different Corbin Russwin section, the 77A2 plug will not take those keys, so match the keyway stamped on your current cylinders before ordering.
3) Is the Corbin Russwin 606K79 a complete mortise cylinder, or do I need a different part if my cylinder body is damaged?
The 606K79 is a 7-pin Individual X Class cylinder plug for 3 inch mortise cylinders with the 77A2 keyway - it is the plug that carries the pin tumblers and key profile, not a full cylinder assembly. If the housing itself is worn or damaged, a complete mortise cylinder is the part to order instead: the Adams Rite 4036 is a Grade 1 five-pin mortise cylinder, and the Detex MC65 is a 1-1/8 inch six-pin mortise cylinder cut to the Schlage C keyway. Those are whole cylinders rather than plugs, so they do not use the 77A2 key profile.
4) If I want keys to be swappable without pulling the cylinder, what should I use instead of the 606K79?
The 606K79 is a fixed pin tumbler plug - rekeying means working the plug itself. For a facility that wants to change keying by swapping a core, an interchangeable core product is the alternative: the BEST 1CB is a 150 Series interchangeable core cylinder, the BEST 1CDF is a drill resistant patented interchangeable core in 7-pin brass from the 150 Series, and the Schlage 20-057-C is a full size interchangeable core in the C keyway with a 643E Aged Bronze finish. Those cores use their own key systems, not the Corbin Russwin 77A2 profile.
5) My exit device takes a rim cylinder - will the 606K79 work there?
No. The 606K79 is a plug for 3 inch mortise cylinders, so it belongs inside a mortise housing threaded into the lock case. Rim applications such as exit devices take a rim cylinder with a tailpiece: the Schlage 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam, the 20-022 is the same 6-pin rim cylinder with a horizontal cam, and the 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam. Choose the cam orientation your device requires.
6) What do I order if the cylinder I am replacing is in a key-in-knob or key-in-lever lockset rather than a mortise lock?
The 606K79 plug suits 3 inch mortise cylinders only. Knob and lever cylinders are a different body entirely: the Kaba Ilco 1539 is a key-in-knob and lever universal cylinder, the Ilco 1579 is a knob and lever cylinder made for Sargent locksets, the Ilco 1599 is a key-in-knob replacement cylinder, and 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. Confirm which lockset brand is on the door before ordering.
7) For an aluminum storefront with an MS1847 deadlock, is this the right cylinder part?
No. The 606K79 is a plug for 3 inch Corbin Russwin mortise cylinders. Adams Rite MS1847 deadlock and deadlatch systems take a cylinder pull: the 4024 mounts with a trim plate, and the 4025 is a five pin tumbler cylinder pull with through-screws, both specified for the MS1847. For a wood door application, the Adams Rite 4026 five pin tumbler cylinder pull is built for the 5017 wood door deadlock and deadlatch.
8) What finishes does the Corbin Russwin 606K79 7-pin plug come in?
Two: 606 Satin Brass and 626 Satin Chrome. Pick the one that matches the visible face of the cylinder already in the door, since the plug face is what shows through the trim.
9) What does the X Class designation on this Corbin Russwin plug mean for key control?
X Class is a restricted key control designation. Keys and blanks are controlled, so duplication is limited, and the 7-pin tumbler stack adds a further layer over a standard 5- or 6-pin plug. For a school, hospital, or office building trying to keep unauthorized key copies out of circulation, that is the reason to specify this plug over a standard one.
10) Can I use this plug in a rim cylinder or an interchangeable core housing?
No. It is a mortise cylinder plug. A rim application needs a rim cylinder such as the Schlage 20-021 (vertical tailpiece cam) or 20-022 (horizontal tailpiece cam), and an interchangeable core opening needs a core like the BEST 1CDF 7-pin or the Schlage 20-057 FSIC core.
11) I need seven pins for key control. Which other cylinders in the category are 7-pin?
The Corbin Russwin 606K79 is a 7-pin Individual X Class plug with the 77A2 keyway, intended for controlled key duplication in commercial buildings. The other 7-pin option in the category is the BEST 1CDF, a drill resistant patented interchangeable core in 7-pin brass from the 150 Series. The 606K79 is a mortise cylinder plug on the Corbin Russwin 77A2 system; the 1CDF is a removable core on the BEST system, so the two are not keyed alike.
12) Is a 5-pin core a simpler substitute for the 606K79 plug?
Not for a Corbin Russwin 3 inch mortise housing - the 606K79 is a 7-pin plug on the 77A2 keyway and the pinning depth and key profile are specific to it. If the opening is on a BEST core system and five pins are acceptable, the BEST 1C5 is a standard 5-pin cylinder core from the Standard and Premium Cores line. The Adams Rite 4036 is also a five-pin design, offered as a Grade 1 mortise cylinder for doors 1/2 inch thick and up.
13) What is the difference between the 606K79 and a dummy cylinder?
The 606K79 is a working 7-pin plug that carries the pin tumblers and operates on the 77A2 key profile. A dummy cylinder has no keyed function at all - the BEST 12E Series dummy rim cylinder, with a 1-5/32 inch diameter, fills a rim prep for appearance or to blank off an unused opening. Order the 606K79 when the opening must be keyed, and the 12E when it must not.
14) I am replacing a residential deadbolt or handleset cylinder - is the 606K79 the part?
No, the 606K79 is a commercial mortise cylinder plug. Deadbolt and handleset retrofits are served by the Medeco rim type cylinders: the 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts, the 1065244 is a 5-pin lazy motion rim cylinder with an Emtek tailpiece, and the 1065140 is a 5-pin retrofit for the Arrow JL interconnected lock and Emtek handleset and deadbolt outside cylinder. Emtek also offers the CY4 cylinder, sold each.
15) Can I use a Kaba Ilco deadbolt cylinder in place of the 606K79 on a mortise lock?
They are built for different applications. The 606K79 is a 7-pin plug for 3 inch Corbin Russwin mortise cylinders on the 77A2 keyway. The Kaba Ilco 1549 is a key-in-deadbolt cylinder and the 1539 is a key-in-knob and lever universal cylinder, both listed with a deadbolt function - they replace cylinders in bored deadbolt and knob or lever locks, not the plug inside a mortise cylinder housing.
16) Is the 606K79 plug rated for commercial door traffic or is it a residential part?
Commercial. It is a genuine Corbin Russwin cylinder part built to commercial tolerances, and it is used in office buildings, schools, healthcare, government buildings, retail, warehouses, and multi-tenant residential.
17) I'm standardizing a building on 7-pin cylinders. Does this plug fit that plan?
It does for Corbin Russwin mortise openings keyed to 77A2, since the plug carries a 7-pin stack and X Class restricted keying. For openings that use interchangeable cores rather than mortise cylinders, the BEST 1CDF is a 7-pin brass core alternative, so a mixed building can hold a 7-pin standard across both hardware types.
How fast can I get the Corbin Russwin 606K79 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 606K79 77A2 626 come with a warranty?
Absolutely. The Corbin Russwin 606K79 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 606K79 77A2 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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