Corbin Russwin 487K13 77A1 7-P...
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Corbin Russwin 487K13 77A1 7-Pin X Class Plug for 1-1/4" Mortise Cylinder with 77A1 Keyway

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Model: 487K13 77A1 626

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

$67.00
$61.58
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Corbin Russwin 487K13 77A1 7-Pin X Class Plug for 1-1/4" Mortise Cylinder with 77A1 Keyway

The Corbin Russwin 487K13 77A1 is a 7-pin X Class replacement plug designed specifically for 1-1/4" mortise cylinders. Featuring the 77A1 keyway in a Satin Brass finish, this commercial-grade cylinder part is engineered to integrate seamlessly with compatible Corbin Russwin mortise cylinder assemblies. Ideal for facilities managers and locksmiths seeking precise, manufacturer-sourced replacement components for mechanical lock systems.

Key Features

  • 7-Pin X Class Plug: High-security 7-pin X Class configuration for enhanced key control and pick resistance in commercial applications.
  • 1-1/4" Mortise Format: Precisely dimensioned at 1-1/4" for direct compatibility with standard mortise cylinder housings.
  • 77A1 Keyway: Factory 77A1 keyway profile ensures proper key fit and smooth operation within compatible Corbin Russwin keying systems.
  • Satin Brass Finish: Corrosion-resistant Satin Brass finish coordinates with a wide range of commercial door hardware aesthetics.
  • Genuine Corbin Russwin Cylinder Part: Manufacturer-sourced replacement plug maintains original performance standards and system integrity.
  • Commercial-Grade Construction: Engineered for demanding commercial environments requiring long-term reliability and consistent cylinder performance.

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: 487K13 77A1
  • 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 487K13?

Corbin Russwin cylinder parts are manufactured to exacting commercial standards, delivering the precision fit and reliable operation that facilities professionals depend on. The 487K13 77A1 plug preserves the integrity of your existing mortise cylinder system with a genuine replacement component, ensuring consistent keying performance and long-term durability in high-traffic 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:
487K13 77A1
Features:
Corbin Russwin Cylinder Parts

Corbin Russwin 487K13 77A1 626 – Frequently Asked Questions

1) What exactly is the Corbin Russwin 487K13 77A1 - a complete cylinder or just the plug?
It is the plug only, not a complete cylinder. The 487K13 77A1 is a 7-pin X Class replacement plug for 1-1/4 inch Corbin Russwin mortise cylinders, cut to the 77A1 keyway. If you need a whole cylinder with housing, cam and keys, this is not it. Locksmiths buy this to rebuild or re-key an existing mortise cylinder housing that is already in the door.
2) Will the 487K13 plug fit any mortise cylinder I have in the door?
No. It is sized for 1-1/4 inch Corbin Russwin mortise cylinder housings and keyed to the 77A1 keyway. Drop it into a shorter or longer Corbin Russwin shell, or another brand's shell, and it will not work. Measure the cylinder length before ordering, and confirm the existing keyway is 77A1 or you will break key interchange across the building.
3) I manage a building keyed on Corbin Russwin 77A1 - will this plug keep my master key system intact?
Yes, provided your system runs the 77A1 keyway. The plug is a factory 77A1 profile in the 7-pin X Class format, so a locksmith can pin it to your existing master and change key levels and it will read the same keys as the rest of the openings. Swapping in a plug of a different keyway is what breaks a master system.
4) Will the Corbin Russwin 487K13 77A1 work in a rim cylinder application?
No. The 487K13 77A1 plug is dimensioned for 1-1/4 inch mortise cylinder housings. Rim applications take a rim cylinder with a tailpiece cam: the Schlage 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam and the 20-022 is the same 6-pin rim cylinder with a horizontal cam, while the Schlage 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam. The BEST 12E Series is a dummy rim cylinder at 1-5/32 inch diameter for openings that need the look without key function.
5) If the whole mortise cylinder needs replacing rather than just the plug, what should be ordered instead of the Corbin Russwin 487K13 77A1?
The Corbin Russwin 487K13 77A1 is a 7-pin X Class replacement plug for 1-1/4 inch mortise cylinders, so it only replaces the rotating plug inside an existing housing. When the entire cylinder is being swapped out, a complete mortise cylinder is the item to order: the Detex MC65 is a 1-1/8 inch 6-pin mortise cylinder in the Schlage C keyway, and the Adams Rite 4036 is a Grade 1 five-pin mortise cylinder from the 4036 Series. Note that both of those arrive with their own keyway, so they will not carry over 77A1 keying.
6) Can the Corbin Russwin 487K13 77A1 be used to rekey a key-in-knob or key-in-lever lockset?
No - the 487K13 77A1 is a mortise cylinder plug, sized for 1-1/4 inch mortise housings. Key-in-knob and key-in-lever locks take a cylinder built for that trim: the Kaba Ilco 1599 is a key-in-knob replacement cylinder, the 1539 Series is a key-in-knob/lever universal 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. For a key-in-deadbolt position, the Kaba Ilco 1549 Series is the corresponding part.
7) Why choose a 7-pin X Class plug over a standard 5- or 6-pin cylinder?
Seven chambers and the X Class profile give tighter key control and more pick resistance than a conventional pinned plug, which is why it shows up in offices, schools, healthcare and government buildings. If you do not need that level of control, a standard commercial cylinder is simpler to service: the BEST 1C Series 5-pin core or the Detex MC65 6-pin mortise cylinder in Schlage C keyway are examples of the plainer route.
8) I need a complete mortise cylinder, not a plug - what should I look at instead?
For a full mortise cylinder rather than a rebuild part, the Detex MC65 is a 1-1/8 inch 6-pin mortise cylinder in the Schlage C keyway, and the Adams Rite 4036 is a Grade 1 five-pin mortise cylinder. Neither runs the Corbin Russwin 77A1 keyway, so they suit a new or standalone opening rather than one keyed into an existing 77A1 system.
9) Does the 487K13 plug come pinned and with keys?
Treat it as a bare plug in the 77A1 keyway. Plan on a locksmith pinning it to your system and cutting keys to your existing bitting, plus the pins, springs and cap you need to rebuild the cylinder. If you want a cylinder that arrives keyed with cut keys, a complete unit such as the Falcon A23161-05 G, which ships keyed different with two cut keys, is the different kind of purchase.
10) What is the difference between the Corbin Russwin 487K13 77A1 plug and an interchangeable core like the BEST 1CDF?
The Corbin Russwin 487K13 77A1 is a 7-pin X Class plug that is fitted into a 1-1/4 inch mortise cylinder housing, so rekeying or changing it is a bench operation on the cylinder. The BEST 1CDF is a drill resistant patented interchangeable core, 7-pin, brass, in the 150 Series, and the BEST 1CB is a Peaks 1CB 150 Series interchangeable core - cores of that type are pulled and replaced with a control key rather than disassembled. The BEST 1C5 is a standard 5-pin core in the Standard and Premium Cores line if a lower pin count is what the system uses.
11) For a narrow stile aluminum door with an Adams Rite deadlock, is the Corbin Russwin 487K13 77A1 the right part?
Not on its own. The 487K13 77A1 is a replacement plug for a 1-1/4 inch mortise cylinder. Adams Rite deadlock openings are typically served by a cylinder pull or a matched mortise cylinder: the Adams Rite 4024 cylinder pull mounts with a trim plate and the 4025 is a five pin tumbler cylinder pull with through-screws, both for the MS1847 deadlock/deadlatch, while the 4026 five pin tumbler cylinder pull is for the 5017 wood door deadlock/deadlatch. The Adams Rite 4036 is the Grade 1 mortise cylinder option for those systems.
12) What are the options for a high security cylinder if the 77A1 keyway of the Corbin Russwin 487K13 is not wanted?
The Corbin Russwin 487K13 77A1 delivers its key control through the 7-pin X Class plug and the factory 77A1 keyway, which keeps it inside a Corbin Russwin keying system. To move to a different restricted platform, the BEST 1CDF is a drill resistant patented interchangeable core, 7-pin in brass, 150 Series, and Medeco offers retrofit cylinders such as the 1012040 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts and the 1065140 5-pin retrofit cylinder for Arrow JL interconnected locks and Emtek handlesets and deadbolts. Those are separate keying systems, so a facility would be operating two key systems unless it converts fully.
13) Does the Corbin Russwin 487K13 77A1 fit an Emtek handleset or deadbolt?
No. The 487K13 77A1 is a 1-1/4 inch mortise cylinder plug intended for Corbin Russwin mortise cylinder assemblies. Emtek residential-style handlesets and deadbolts are served by their own parts: the Emtek CY4 cylinder is sold individually, the Medeco 1065244 is a 5-pin rim lazy motion cylinder supplied with an Emtek tailpiece, and the Medeco 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts.
14) How does the Corbin Russwin 487K13 77A1 compare with a Schlage full size interchangeable core for standardizing a facility?
The Corbin Russwin 487K13 77A1 keeps an existing 1-1/4 inch mortise cylinder in service with a 7-pin X Class plug in the 77A1 keyway, and it is offered in 606 Satin Brass and 626 Satin Chrome. A full size interchangeable core program works differently: the Schlage 20-057-C is an FSIC core in the C keyway with a 643E Aged Bronze finish, and the 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam. Facilities that want cores swapped by hand at the door choose the FSIC route; facilities already keyed to 77A1 keep the plug.
15) What finishes does the Corbin Russwin 487K13 77A1 plug come in?
Two: 606 Satin Brass and 626 Satin Chrome. Pick the one that matches the cylinder ring and the rest of the trim on the opening, since the plug face is the part that shows.
16) Is the 487K13 77A1 a genuine Corbin Russwin part or an aftermarket copy?
Genuine Corbin Russwin. It is a manufacturer-sourced cylinder part, which matters on an X Class system because the restricted keyway and pinning tolerances have to match the rest of the factory hardware for the keys to work reliably.
How fast can I get the Corbin Russwin 487K13 77A1 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 487K13 77A1 626 come with a warranty?
Absolutely. The Corbin Russwin 487K13 77A1 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 487K13 77A1 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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