Corbin Russwin 021F68-8 Rim Cy...
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Corbin Russwin 021F68-8 Rim Cylinder Mounting Screw Replacement Part for Commercial Door Hardware

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Model: 021F68-8

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

$16.94
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Corbin Russwin 021F68-8 Rim Cylinder Mounting Screw Replacement Part for Commercial Door Hardware

The Corbin Russwin 021F68-8 is a genuine manufacturer replacement mounting screw designed specifically for Corbin Russwin rim cylinders. This commercial-grade cylinder part provides the precise fastening needed to securely seat rim cylinders in demanding door hardware applications. Sourced directly from Corbin Russwin's cylinder parts line, this replacement component ensures proper fit and function when servicing or maintaining existing Corbin Russwin cylinder assemblies.

Key Features

  • Genuine Corbin Russwin Cylinder Part: Manufactured as an authentic Corbin Russwin replacement component, ensuring compatibility and correct fit with Corbin Russwin rim cylinder assemblies.
  • Rim Cylinder Application: Specifically engineered as a mounting screw for rim cylinder configurations, providing secure and reliable fastening in commercial door hardware installations.
  • Commercial-Grade Construction: Built to the quality standards expected in commercial door hardware environments, supporting long-term performance in high-use settings.
  • Replacement Part Convenience: Allows technicians and installers to restore full cylinder functionality without replacing the entire cylinder assembly, reducing maintenance costs.
  • Precise Fit: Designed to exact Corbin Russwin specifications to ensure proper thread engagement and secure cylinder mounting.

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: 021F68-8
  • Features: Corbin Russwin Cylinder Parts

Typical Applications

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

Why Corbin Russwin 021F68-8?

Corbin Russwin cylinder parts are engineered to the same exacting standards as their complete cylinder assemblies, ensuring genuine compatibility and reliable performance when servicing installed hardware. Choosing an authentic Corbin Russwin replacement mounting screw guarantees the correct fit and thread specification for rim cylinder installations, making it the trusted choice for professional locksmiths, facility managers, and door hardware technicians working in 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:
021F68-8
Features:
Corbin Russwin Cylinder Parts

Corbin Russwin 021F68-8 – Frequently Asked Questions

1) What is the Corbin Russwin 021F68-8 and what does it actually do?
The 021F68-8 is the mounting screw that holds a Corbin Russwin rim cylinder to the door. Rim cylinders mount from the inside face with long machine screws passing through the door into the back of the cylinder; these are those screws. It is a genuine Corbin Russwin cylinder part, so the thread matches the cylinder body without modification.
2) Which screw length should I order for my door thickness, 2-9/32 inch or 3-1/8 inch?
Two lengths are offered: 2-9/32 inches and 3-1/8 inches. The screw has to pass through the door and engage the cylinder back, so the thicker the door (or the deeper the device plate behind it), the longer the screw. On a standard 1-3/4 inch commercial door the shorter 2-9/32 inch screw is the usual fit; the 3-1/8 inch length is for thicker doors or where the cylinder sits behind an exit device chassis or reinforcement. Measure the old screw if you have it, that is the fastest check.
3) Will Corbin Russwin 021F68-8 screws work on a Schlage or BEST rim cylinder?
Treat them as Corbin Russwin only. These are made to Corbin Russwin's own thread and cylinder-back specification. If you are servicing a Schlage rim cylinder such as the 20-021 (vertical tailpiece cam) or 20-022 (horizontal cam), or a BEST 12E Series rim cylinder, use that manufacturer's own mounting screws.
4) My rim cylinder needs replacing, not just the screws - what should I order instead of the 021F68-8?
The 021F68-8 covers only the mounting screw for a Corbin Russwin rim cylinder. For a full cylinder, the Schlage Commercial 20-021 and 20-022 are 6-pin rim cylinders supplied with two keys, differing in vertical versus horizontal tailpiece cam, and the Schlage Commercial 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam. Medeco also lists rim-type cylinders such as the 1065244, a 5-pin lazy motion rim cylinder with an Emtek tailpiece.
5) Do I have to replace the whole rim cylinder if the mounting screws are stripped or missing?
No. Replacing just the screws restores the mount. Stripped, snapped, or missing rim cylinder screws are one of the most common service calls on exit device openings, and swapping in the correct Corbin Russwin screw lets a tech reseat the existing cylinder rather than pull and rekey a new one.
6) Is this screw for a mortise cylinder as well as a rim cylinder?
Rim only. A mortise cylinder threads directly into the lock case and is held by a set screw in the edge of the door, so it takes no through-screws at all. If you are working on a mortise cylinder, for example an Adams Rite 4036 or a Detex MC65, this part is not what you need.
7) I am standardizing rim cylinder service parts across a portfolio. Can I stock one length of this screw?
Stock both if your doors are not uniform. The 021F68-8 comes in 2-9/32 inch and 3-1/8 inch, and which one a given opening needs depends on door thickness plus anything sandwiched behind the cylinder. Buildings with consistent 1-3/4 inch doors and no reinforcing plates can usually run on the short length alone, but any mix of door constructions means carrying both avoids a second trip.
8) Will the 021F68-8 screw work on a mortise cylinder installation?
The 021F68-8 is specified as a mounting screw for Corbin Russwin rim cylinders, where the screws pass through the door into the cylinder back plate. Mortise cylinders thread into the lock case and are retained by a set screw in the lock body instead - examples of that type include the Adams Rite 4036 mortise cylinder, a Grade 1 five-pin unit in the 4036 Series, and the Detex MC65 1-1/8 inch 6-pin mortise cylinder with a Schlage C keyway. Neither uses rim cylinder through-screws.
9) I need an interchangeable core rather than a Corbin Russwin rim cylinder part - what are the options?
The 021F68-8 is a fastener for a fixed Corbin Russwin rim cylinder and has no core function. If you are standardizing on interchangeable cores, the BEST 1CB is a Peaks 150 Series interchangeable core cylinder, the BEST 1CDF is a drill-resistant patented 7-pin brass interchangeable core in the 150 Series, and the BEST 1C5 is a standard 5-pin cylinder core. On the full-size interchangeable side, the Schlage Commercial 20-057-C is an FSIC core in C keyway, 643E aged bronze.
10) Is the 021F68-8 suitable for high-traffic commercial buildings, or is it a residential part?
It is a commercial part. Corbin Russwin lists it under its cylinder parts line for commercial door hardware, and it is the screw facilities crews keep on the van for office buildings, schools, hospitals, retail, warehouses, multi-tenant residential, and government buildings where rim cylinders sit on exit devices that cycle all day.
11) What is the difference between the 021F68-8 mounting screw and the through-screws supplied with an Adams Rite cylinder pull?
The 021F68-8 is a standalone Corbin Russwin replacement mounting screw for rim cylinders, sold in 2-9/32 inch and 3-1/8 inch lengths so you can match door thickness. The Adams Rite 4025 is a five-pin tumbler cylinder pull that comes with through-screws as part of the assembly and is designed for the Adams Rite MS1847 deadlock/deadlatch; the Adams Rite 4024 is a cylinder pull with trim plate mounting for the same MS1847 system, and the 4026 is the version for the 5017 wood door deadlock/deadlatch.
12) Can I use the 021F68-8 screw to mount a rim cylinder on a residential deadbolt or handleset?
The 021F68-8 is a commercial replacement part matched to Corbin Russwin rim cylinders. Residential deadbolts and handlesets generally use cylinders supplied with their own mounting hardware - for example the Medeco 1012040, a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the Medeco 1075127 5-pin rim-type lazy motion single cylinder for handlesets and deadbolts, and the Medeco 1065140 5-pin retrofit cylinder for Arrow JL interconnected locks and Emtek handleset and deadbolt outside cylinders.
13) I only need a non-keyed rim cylinder body for the opposite side - is the 021F68-8 what I want?
No. The 021F68-8 supplies the mounting screw, not a cylinder body. For a non-keyed filler on a rim application, the BEST 12E Series dummy rim cylinder has a 1-5/32 inch diameter. For keyed key-in-knob or lever replacements, Kaba Ilco lists the 1539 universal key-in-knob/lever cylinder, the 1579 knob and lever cylinder for Sargent, and the 1599 key-in-knob replacement cylinder.
How fast can I get the Corbin Russwin 021F68-8 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 021F68-8 come with a warranty?
Absolutely. The Corbin Russwin 021F68-8 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 021F68-8?
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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