Schlage A501-783 Blocking Disc...
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Schlage A501-783 Blocking Disc for Yale Lever Compatibility

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Model: A501-783

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

$22.09
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Schlage A501-783 Blocking Disc for Yale Lever Compatibility

The Schlage A501-783 is a commercial-grade blocking disc engineered for use with Yale lever trim, providing a precise mechanical interface solution for compatible Schlage lock assemblies. Designed as a genuine Schlage replacement part, this blocking disc ensures proper lever function and alignment within the lock body when integrating Yale lever components. Built to Schlage's professional standards, this component is suited for commercial door hardware applications where reliable, exact-fit parts are essential for maintaining security hardware performance.

Key Features

  • Yale Lever Compatibility: Specifically designed for use with Yale lever trim, enabling proper mechanical integration within compatible Schlage lock assemblies.
  • Genuine Schlage Part: An authentic Schlage replacement component manufactured to original equipment specifications for reliable fit and function.
  • Commercial-Grade Construction: Built to meet the demands of commercial door hardware environments where consistent, dependable performance is required.
  • Precise Fit: Engineered to exact tolerances to maintain proper lever alignment and lock body operation upon installation.
  • Drop-In Replacement: Serves as a direct replacement part, simplifying maintenance and service of existing compatible lock assemblies.

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: A501-783
  • Features: Schlage 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 Schlage A501-783?

Schlage replacement parts like the A501-783 Blocking Disc are manufactured to the same standards as original equipment components, ensuring compatibility and consistent mechanical performance in commercial lock assemblies. When maintaining or servicing Yale lever-equipped Schlage hardware, using genuine Schlage parts is the reliable choice for preserving the integrity and security of the installation.

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:
A501-783
Features:
Schlage Parts

Schlage A501-783 – Frequently Asked Questions

1) I need a replacement cylinder, not a blocking disc. Is the A501-783 the wrong part for me?
Yes, wrong part. The A501-783 does not accept keys or pins, it only positions Yale lever trim inside the lock body. If you need a keyed cylinder, look at a mortise or key-in-lever cylinder instead: the Corbin Russwin 1000 Grade 1 mortise cylinder in 1-1/2 inch with an A02 straight cam, the Detex MC65 mortise cylinder in Schlage C keyway, or the Kaba Ilco 1539 universal key-in-knob/lever cylinder.
2) Does the A501-783 let me put Yale levers on any Schlage lock?
No. It is made for use with Yale lever trim on compatible Schlage lock assemblies only. It is a service part for an assembly already built to take that trim, not a universal adapter for converting any Schlage lockset to Yale levers.
3) Is the Schlage A501-783 blocking disc a keyed cylinder I can order to rekey a lever lock?
No. The A501-783 is a blocking disc, a small mechanical interface part used with Yale lever trim so the lever aligns and functions correctly inside a compatible Schlage lock assembly. It carries no pins, keyway or key. If what you actually need is a keyed cylinder for a key-in-lever or key-in-knob lock, look at a cylinder such as the Falcon A23161-05 G key in lever cylinder, a 6-pin G keyway unit supplied keyed different with two cut keys, or the Kaba Ilco 1599 key-in-knob replacement cylinder.
4) I need a replacement cylinder for a mortise lock, not a trim part. What should I be looking at instead of the A501-783?
The A501-783 is a Schlage blocking disc used with Yale lever trim and does nothing for a mortise lock cylinder. For a mortise body, the Corbin Russwin 1000 Grade 1 series mortise cylinder is offered in 1-1/2 inch length with an A02 straight cam, and the Corbin Russwin 1070 Grade 1 series is a 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam. If the lock uses a large format interchangeable core, the Corbin Russwin 1080 Grade 1 series is a 1-1/2 inch LFIC 6-pin mortise cylinder for Schlage L9000 mortise locks with an A01 Schlage L cam.
5) Will the A501-783 work on an aluminum storefront door with a narrow stile deadlock?
The A501-783 is built for Yale lever trim integration into compatible Schlage commercial lock assemblies, not for narrow stile storefront deadlocks. For that opening, Adams Rite parts are the match: the 4024 cylinder pull with trim plate mounting and the 4025 five pin tumbler cylinder pull with through-screws are both for the MS1847 deadlock/deadlatch, the 4026 five pin tumbler cylinder pull is for the 5017 wood door deadlock/deadlatch, and the Adams Rite 4036 is a Grade 1 five-pin mortise cylinder with a 1/2 inch minimum door thickness.
6) Is the Schlage A501-783 a genuine Schlage part or an aftermarket copy?
It is a genuine Schlage replacement component made to original equipment specifications, so it drops into the compatible lock assembly without fitting or modification.
7) Is a blocking disc the same thing as a retrofit cylinder that adapts one brand's lock to another?
No, and the distinction matters when you are mixing brands. The A501-783 is a mechanical alignment component inside the lock body for Yale lever trim. Cross-brand retrofit cylinders are a different animal, for example the Corbin Russwin 1080 LFIC mortise cylinder built for Schlage L9000 mortise locks with an A01 Schlage L cam, or the Kaba Ilco 1579 knob and lever cylinder for Sargent. Those change the keying hardware; the blocking disc changes nothing about keying.
8) We standardize on small format interchangeable core. Does the A501-783 fit that program?
No. The A501-783 is a Schlage replacement blocking disc for Yale lever trim and is not a core or a core housing, so it plays no part in a keying program. For an interchangeable core standard, the BEST 1C series standard 5-pin cylinder core, the BEST Peaks 1CB 150 series interchangeable core cylinder, and the BEST 1CDF drill resistant patented interchangeable core 7-pin brass 150 series cylinder are the parts that carry the keying.
9) What is the difference between ordering the A501-783 and ordering a rim cylinder?
The A501-783 is a non-keyed blocking disc that sets lever alignment where Yale lever trim is used in a Schlage assembly. A rim cylinder mounts through the door and drives a surface device or deadbolt by a tailpiece: the Corbin Russwin 3070 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece, the BEST 12E series is a dummy rim cylinder with a 1-5/32 inch diameter, and Medeco offers the 1012040 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts and the 1065244 5-pin lazy motion rim type cylinder with an Emtek tailpiece.
10) I have a mixed fleet of lever locks from different makers. Is the A501-783 a universal lever part?
No. The A501-783 is a genuine Schlage part made to original equipment specification for one job, integrating Yale lever trim into compatible Schlage lock assemblies, so it is an exact-fit component rather than a universal one. Where you want one part number to cover several brands of key-in-knob and lever locks, the Kaba Ilco 1539 series is a key-in-knob/lever universal cylinder, and Ilco also builds the 1579 knob and lever cylinder for Sargent.
11) Does the A501-783 have anything to do with servicing a deadbolt?
It does not. The A501-783 is a commercial blocking disc for Yale lever trim within Schlage lock assemblies. Deadbolt service calls for a keyed part instead: the Kaba Ilco 1549 series is a key-in-deadbolt cylinder, the Medeco 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts, and the Medeco 1065140 is a 5-pin retrofit cylinder for Arrow JL interconnected locks and Emtek handleset and deadbolt outside cylinders.
12) Is the A501-783 blocking disc rated for commercial door hardware or residential use?
Commercial. It is catalogued by Schlage as a commercial door hardware replacement part and is used in office buildings, schools, healthcare, retail, warehouse, multi-tenant residential and government facilities.
13) How is the A501-783 ordered, and is there more than one version?
There is a single part, ordered as A501-783 with no finish, handing or size options to choose. Specify the quantity you need for the number of lock bodies being serviced.
How fast can I get the Schlage A501-783 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 A501-783 come with a warranty?
Absolutely. The Schlage A501-783 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 A501-783?
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 A501-783 from ZenSupply?
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