Schlage B202-339 Reducing Bush...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$163.00
$123.17
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Schlage B202-339 Reducing Bushing and Screw Pack for Corbin Russwin Master Ring

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Model: B202-339

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

$163.00
$123.17
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Schlage B202-339 Reducing Bushing and Screw Pack for Corbin Russwin Master Ring

The Schlage B202-339 is a commercial-grade reducing bushing and screw pack engineered specifically for use with Corbin Russwin master rings. Designed as a precision replacement part for cylinder applications, this accessory pack ensures a secure and properly fitted installation when adapting cylinder components in commercial door hardware assemblies. Manufactured to Schlage's professional standards, the B202-339 delivers reliable performance for locksmiths and commercial hardware installers requiring exact-fit replacement components.

Key Features

  • Corbin Russwin Master Ring Compatibility: Specifically designed for use with Corbin Russwin master rings, ensuring precise fitment and reliable cylinder adaptation in commercial applications.
  • Complete Pack: Includes the reducing bushing and accompanying screw hardware, providing all necessary components for a proper installation in a single convenient pack.
  • Commercial-Grade Construction: Engineered to Schlage's professional quality standards for dependable performance in demanding commercial door hardware environments.
  • Cylinder Application: Classified as a cylinder replacement part, making it ideal for locksmiths and facility maintenance professionals performing cylinder service or upgrades.
  • Schlage Parts Quality: Genuine Schlage replacement component, ensuring compatibility and performance consistent with original hardware specifications.

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: B202-339
  • Features: Schlage 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 Schlage B202-339?

The Schlage B202-339 delivers the precision fitment and material quality expected from a genuine Schlage replacement part, purpose-built for compatibility with Corbin Russwin master ring cylinder assemblies. Engineered for commercial environments, this reducing bushing and screw pack supports professional-grade cylinder service and ensures correct adapter integration for lasting, dependable door hardware performance.

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:
B202-339
Features:
Schlage Parts

Schlage B202-339 – Frequently Asked Questions

1) What is the Schlage B202-339 actually used for?
The B202-339 is a reducing bushing packaged with its screws, used when adapting cylinder components in commercial door hardware. Schlage builds it specifically for use with Corbin Russwin master rings, so it is a cylinder service part rather than a lock or a cylinder itself. Locksmiths reach for it when a cylinder assembly needs the correct adapter to seat properly.
2) Will the Schlage B202-339 reducing bushing work in place of a full mortise cylinder?
No. The B202-339 is a reducing bushing and screw pack for Corbin Russwin master ring applications, not a keyed cylinder. If the opening needs an actual mortise cylinder, look at the Corbin Russwin 1000 Grade 1 Series mortise cylinder in 1-1/2 inch length with an A02 straight cam, or the Corbin Russwin 1070 Grade 1 Series 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam. The B202-339 is an adapter part used alongside cylinder work, not the lock cylinder itself.
3) I need to put a Schlage key system into a Corbin Russwin mortise lock instead of adapting a master ring. What should I use?
Rather than adapting with the B202-339 bushing, the Corbin Russwin 1080 Grade 1 Series 1-1/2 inch LFIC mortise cylinder is built 6-pin for Schlage L9000 mortise locks with an A01 cloverleaf cam. That gives you a purpose-built cylinder for the Schlage L-series cam pattern rather than a reducing bushing used in Corbin Russwin master ring assemblies.
4) What should I order instead for an aluminum storefront door with an Adams Rite deadlock?
The Schlage B202-339 is a commercial reducing bushing for Corbin Russwin master ring assemblies and does not address storefront deadlock prep. For an Adams Rite MS1847 deadlock or deadlatch, the 4024 cylinder pull mounts with a trim plate and the 4025 is a five pin tumbler cylinder pull with through-screws. The Adams Rite 4036 is a Grade 1 mortise cylinder in the 4036 Series with a 1/2 inch minimum door thickness.
5) Do I get the screws with the Schlage B202-339 or do I have to order them separately?
The screws come with it. The B202-339 ships as a complete pack, reducing bushing plus the accompanying screw hardware, so there is nothing else to add for the adapter itself.
6) Will the Schlage B202-339 work with a BEST interchangeable core setup?
No. The B202-339 is built around Corbin Russwin master rings, which is a different cylinder system entirely. For BEST small format interchangeable core work, look at the BEST 1C Series standard 5-pin core or the 1CB 150 Series interchangeable core cylinder instead.
7) Is there an interchangeable core alternative if I do not want to keep servicing master ring cylinders?
Yes, if you are moving the facility to small format interchangeable core instead. The BEST 1C Series standard 5-pin cylinder core and the BEST Peaks 1CB 150 Series interchangeable core cylinder are IC-based, and the BEST 1CDF is a drill resistant patented interchangeable core in 7-pin brass, 150 Series. Those replace the cylinder approach entirely, where the Schlage B202-339 is a reducing bushing and screw pack that supports Corbin Russwin master ring assemblies.
8) What is the equivalent adapter part for a key-in-knob or key-in-lever retrofit rather than a master ring cylinder?
For key-in-knob and key-in-lever retrofits, the Kaba Ilco 1539 Series is a universal key-in-knob/lever cylinder, the 1579 Series is a knob and lever cylinder for Sargent, and the 1599 Series is a key-in-knob replacement cylinder. The Schlage B202-339 does not cover those openings - it is a reducing bushing and screw pack for Corbin Russwin master ring cylinder work.
9) Does the B202-339 give me a high-security or drill resistant upgrade?
No. The B202-339 is a genuine Schlage replacement bushing and screw pack, a fitment part rather than a security cylinder. If the goal is a security upgrade, the BEST 1CDF is a drill resistant patented interchangeable core in 7-pin brass, and Medeco offers retrofit cylinders such as the 1012040 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts and the 1075127 5-pin rim type lazy motion single cylinder for handlesets and deadbolts.
10) I need a cylinder for an Emtek handleset, not a Corbin Russwin master ring. What fits?
The Emtek CY4 cylinder is sold each for Emtek applications, and Medeco offers the 1065244 5-pin rim lazy motion rim type cylinder with an Emtek tailpiece and the 1065140 5-pin retrofit cylinder for Arrow JL interconnected locks plus Emtek handleset and deadbolt outside cylinder use. The Schlage B202-339 is specific to Corbin Russwin master ring adaptation and will not serve an Emtek handleset.
11) Is the B202-339 suitable for a house, or is it strictly a commercial part?
It is catalogued as a commercial part and Schlage builds it for commercial door hardware service, typical in offices, schools, healthcare, government buildings, retail, warehouses and multi-tenant residential. Nothing stops it working on a light-duty opening, but the application it is engineered around is commercial cylinder work.
12) Is the B202-339 a genuine Schlage part or an aftermarket copy?
Genuine Schlage. It carries Schlage's own model designation B202-339 and is built to Schlage's production standards, which matters if a facility is standardizing on OEM components for its cylinder service stock.
13) How many versions of the Schlage B202-339 are there? Do I pick a finish or size?
There is one configuration only. The B202-339 is ordered as a single part number with no finish, length or keyway options to choose.
14) Is a Detex MC65 or Falcon key-in-lever cylinder a substitute for the B202-339?
They are not interchangeable. The Detex MC65 is a 1-1/8 inch 6-pin commercial mortise cylinder in Schlage C keyway, and the Falcon A23161-05 G is a key-in-lever cylinder, RU/T Series 6-pin G keyway, keyed different with two cut keys. Both are keyed cylinders. The Schlage B202-339 supplies a reducing bushing and the screws to fit it, used with Corbin Russwin master ring cylinder assemblies.
15) For a deadbolt cylinder replacement, is there a simpler part than adapting with a bushing?
Yes. The Kaba Ilco 1549 Series is a key-in-deadbolt cylinder with a deadbolt function, which is a direct cylinder swap rather than an adaptation. The Schlage B202-339 is an adapter pack - a reducing bushing with screws for Corbin Russwin master ring cylinder assemblies - so it is used when you are fitting components together, not when you simply need a deadbolt cylinder.
How fast can I get the Schlage B202-339 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 Schlage B202-339 come with a warranty?
Absolutely. The Schlage B202-339 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 Schlage B202-339?
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
Why buy the Schlage B202-339 from ZenSupply?
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