Corbin Russwin 487K17 77B2 7-P...
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Corbin Russwin 487K17 77B2 7-Pin X Class Mortise Cylinder Plug, 1-1/2" with 77B2 Keyway in Satin Brass

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Model: 487K17 77B2 626

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

$67.00
$61.58
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Corbin Russwin 487K17 77B2 7-Pin X Class Mortise Cylinder Plug with 77B2 Keyway in Satin Brass

The Corbin Russwin 487K17 77B2 is a 7-Pin X Class replacement plug engineered for 1-1/2" mortise cylinder applications. Featuring the 77B2 keyway and a Satin Brass finish, this precision-manufactured cylinder plug is a genuine Corbin Russwin component designed for seamless integration with compatible mortise lock hardware. Ideal for commercial door security applications where reliable cylinder performance and key control are essential.

Key Features

  • 7-Pin X Class Configuration: Engineered with a 7-pin X Class plug design for enhanced key control and security in commercial mortise cylinder applications.
  • 1-1/2" Mortise Format: Precisely dimensioned at 1-1/2" to fit standard mortise cylinder housings for accurate, reliable drop-in replacement.
  • 77B2 Keyway: Incorporates the Corbin Russwin 77B2 keyway for compatibility with existing 77B2-keyway key systems and master key hierarchies.
  • Satin Brass Finish: Factory-applied Satin Brass finish provides a professional aesthetic and corrosion resistance suited for commercial environments.
  • Genuine Corbin Russwin Cylinder Part: Manufactured as an authentic Corbin Russwin component, ensuring proper fit, function, and performance within compatible Corbin Russwin mortise lock assemblies.
  • Commercial-Grade Quality: Rated and designated for commercial applications, meeting the performance demands of high-use institutional and commercial door hardware installations.

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: 487K17 77B2
  • 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 487K17?

Corbin Russwin cylinder components are designed and manufactured to exacting tolerances, ensuring authentic compatibility and reliable operation within Corbin Russwin mortise lock assemblies. The 487K17 77B2 plug's 7-pin X Class configuration provides the key control integrity demanded by commercial security professionals, making it a dependable choice for facility maintenance, re-keying projects, and lock servicing in high-traffic institutional 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:
487K17 77B2
Features:
Corbin Russwin Cylinder Parts

Corbin Russwin 487K17 77B2 626 – Frequently Asked Questions

1) Will the 487K17 plug work with my existing Corbin Russwin 77B2 keys?
Yes, if your system is on the 77B2 keyway. The plug is cut for the Corbin Russwin 77B2 keyway, so it works with existing 77B2 key systems and the master key hierarchies built on them. A plug in any other Corbin Russwin keyway will not accept 77B2 keys, so match the keyway designation before ordering.
2) I need a cylinder for a Schlage or BEST lock, not Corbin Russwin. What should I look at instead?
The 487K17 is a genuine Corbin Russwin component intended for Corbin Russwin mortise assemblies, so it is the wrong part for another brand's lock. For Schlage rim applications, the Schlage 20-021 (vertical tailpiece cam) and 20-022 (horizontal tailpiece cam) are 6-pin rim cylinders, and the 20-057 is a 6-pin FSIC rim cylinder. On BEST interchangeable core systems, look at the BEST 1C 5-pin core or the 1CDF drill resistant patented 7-pin core.
3) If I need a complete mortise cylinder rather than just the plug, what should I order instead of the Corbin Russwin 487K17 77B2?
The Corbin Russwin 487K17 77B2 is a replacement cylinder plug, not a full cylinder housing, so it suits re-keying and servicing of an existing Corbin Russwin mortise cylinder. 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 six-pin mortise cylinder cut to the Schlage C keyway. Both are whole cylinders on their own keyways, so they will not key into an existing 77B2 system.
4) Can I use a BEST interchangeable core instead of the Corbin Russwin 487K17 plug?
No - they are different key control systems. The 487K17 77B2 is a 7-pin X Class plug built to the Corbin Russwin 77B2 keyway so it drops into a compatible Corbin Russwin mortise cylinder and stays within an existing 77B2 master key hierarchy. BEST small format interchangeable cores such as the 1C Series standard 5-pin core, the 1CB 150 Series Peaks core, or the 1CDF drill resistant patented 7-pin core require an IC-prepped housing and are removed with a control key rather than re-pinned in place.
5) What is the equivalent if my opening uses a rim exit device rather than a mortise lock?
The Corbin Russwin 487K17 77B2 plug is dimensioned for 1-1/2 inch mortise cylinder housings and will not serve a rim device. For rim applications, the Schlage 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam and the 20-022 is the same cylinder with a horizontal tailpiece cam; the Schlage 20-057 is a 6-pin full size interchangeable core rim cylinder with a convertible tailpiece cam. Match the cam orientation to what your exit device chassis requires.
6) What does 7-pin X Class mean on a Corbin Russwin cylinder plug?
X Class is Corbin Russwin's restricted key control designation, and this plug is built in the 7-pin version of it. The extra pin chamber over a standard 6-pin plug gives more room for master keying levels and tighter key control, which is why it shows up in institutional and commercial buildings that need a locked-down key system. Practically, it means the plug has to go into a housing pinned for 7 pins on X Class.
7) Can I use the 487K17 to re-key an existing Corbin Russwin mortise lock instead of buying a new cylinder?
That's exactly the use case. Swapping the plug lets you move a 1-1/2 inch Corbin Russwin mortise cylinder onto a 77B2 X Class key system without replacing the cylinder shell or touching the lock case or door prep. It suits re-keying projects and lock servicing where the housing is still good. Note it is a 7-pin plug, so the shell has to be a 7-pin X Class cylinder.
8) Is a mortise cylinder plug the same thing as an interchangeable core?
No. The 487K17 is a plug that goes inside a 1-1/2 inch mortise cylinder shell, so replacing it is bench work on the cylinder. An interchangeable core, like the BEST 1CB 150 Series core or the Schlage 20-057-C full size interchangeable core, pulls out with a control key and drops a new one in with no disassembly. If your goal is tool-free re-keying at the door, you want an IC system, not a plug.
9) I need a cylinder for a key-in-lever or key-in-knob lock, not a mortise lock. What takes the place of the 487K17?
The 487K17 77B2 is a mortise cylinder plug and does not fit knob or lever chassis. For those, the Kaba Ilco 1539 Series is a universal key-in-knob and lever cylinder, the 1579 Series is a knob and lever cylinder made for Sargent locks, and the 1599 is a key-in-knob replacement cylinder. The Falcon A23161-05 G is a key-in-lever cylinder for the RU/T series with a 6-pin G keyway, keyed different and supplied with two cut keys.
10) Will the Corbin Russwin 487K17 plug work in an aluminum storefront with an Adams Rite deadlock?
No. The 487K17 77B2 is a 7-pin X Class plug for Corbin Russwin mortise cylinder housings. Adams Rite storefront hardware uses its own cylinder pulls and cylinders: the 4024 cylinder pull mounts with a trim plate for MS1847 deadlock and deadlatch systems, the 4025 is a five-pin tumbler cylinder pull using through-screws for the MS1847, and the 4026 is a five-pin cylinder pull for the 5017 wood door deadlock. Where a standalone mortise cylinder is wanted on that hardware, the Adams Rite 4036 is a Grade 1 five-pin mortise cylinder with a 1/2 inch minimum door thickness.
11) What should I use for a residential deadbolt or handleset instead of the Corbin Russwin 487K17?
The 487K17 77B2 is designated for commercial mortise applications. For deadbolts and handlesets, the Medeco 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the 1065140 is a 5-pin retrofit cylinder for Arrow JL interconnected locks and Emtek handleset and deadbolt outside cylinders, the 1065244 is a 5-pin lazy motion rim cylinder supplied with an Emtek tailpiece, and the 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts. Emtek's own CY4 cylinder is sold individually as a parts item.
12) I only need to fill a cylinder hole with no keying. Is the 487K17 the right part?
No. The 487K17 77B2 is a functioning 7-pin X Class plug intended to carry the 77B2 keyway and operate within a master key system. For a non-functioning fill on a rim prep, the BEST 12E Series dummy rim cylinder with a 1-5/32 inch diameter is the purpose-built option.
13) Is there a full size interchangeable core option if we want to standardize a facility on cores we can swap ourselves?
The 487K17 77B2 plug is re-pinned in place inside a Corbin Russwin mortise housing, which suits facilities staying on an existing 77B2 hierarchy. If you want field-swappable cores instead, the Schlage 20-057-C is a full size interchangeable core cylinder in the C keyway with a 643E Aged Bronze finish, and the Schlage 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam. Moving to FSIC means a new key system rather than an extension of the 77B2 one.
14) Is this plug suitable for a high-traffic school or hospital door?
Yes. The 487K17 is designated for commercial use and is aimed at high-use institutional work, including educational facilities, healthcare, government and municipal buildings, offices, retail, industrial sites, and multi-tenant residential. The 7-pin X Class key control is the reason it lands in those buildings, where re-keying and key accountability matter more than on a single door.
15) We are replacing a cylinder in a deadbolt, not a mortise lock. Does the 487K17 cross over?
It does not - the 487K17 77B2 is a plug for 1-1/2 inch mortise cylinder housings. The Kaba Ilco 1549 Series is a key-in-deadbolt cylinder built for deadbolt function, and the 1539, 1579 and 1599 Series cylinders are also catalogued for deadbolt function in knob and lever style bodies.
How fast can I get the Corbin Russwin 487K17 77B2 626 delivered?
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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 487K17 77B2 626 come with a warranty?
Absolutely. The Corbin Russwin 487K17 77B2 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 487K17 77B2 626?
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