Schlage B520-409 Cylinder Tail...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$51.40
$50.07
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Schlage B520-409 Cylinder Tailpiece and Actuator for Yale Knob Compatibility

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Model: B520-409

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

$51.40
$50.07
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Schlage B520-409 Cylinder Tailpiece and Actuator for Yale Knob Compatibility

The Schlage B520-409 is a commercial-grade cylinder tailpiece and actuator replacement part designed specifically for use with Yale knob hardware. This precision-engineered component ensures reliable cylinder operation and smooth actuator engagement for compatible lock assemblies. Manufactured by Schlage as a genuine replacement part, the B520-409 is the correct choice for maintaining and restoring proper function in door hardware systems that incorporate Yale knob configurations.

Key Features

  • Genuine Schlage Replacement Part: Factory-specified cylinder tailpiece and actuator component ensures proper fit and performance in compatible lock assemblies.
  • Yale Knob Compatibility: Engineered specifically for use with Yale knob hardware, providing reliable mechanical engagement between the cylinder and actuator.
  • Commercial-Grade Construction: Designed to meet the demands of commercial door hardware applications where consistent, dependable operation is essential.
  • Cylinder Tailpiece Function: Connects the lock cylinder to the actuating mechanism, enabling proper lock and unlock operation in the host assembly.
  • Direct Replacement Component: Purpose-built replacement part that restores original function without requiring full hardware replacement, reducing maintenance costs.
  • Parts and Accessories Classification: Catalogued as a Schlage genuine parts component, ensuring traceability and compatibility within supported product families.

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: Cylinder Tailpiece
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: B520-409
  • 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 B520-409?

Schlage cylinder tailpiece and actuator components are manufactured to exact specifications, ensuring that commercial door hardware maintains its intended mechanical performance over time. The B520-409 is a genuine Schlage replacement part engineered for Yale knob compatibility, making it the reliable, specification-correct choice for facility maintenance professionals and door hardware technicians who require precise, dependable components for commercial lock servicing.

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:
Cylinder Tailpiece
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
B520-409
Features:
Schlage Parts

Schlage B520-409 – Frequently Asked Questions

1) What does the Schlage B520-409 cylinder tailpiece and actuator actually do?
The B520-409 is the link between the lock cylinder and the actuating mechanism inside the lock. Turning the key rotates the cylinder, the tailpiece carries that rotation into the actuator, and the lock throws or retracts. If a key turns freely but nothing happens in the lock, a worn or wrong tailpiece is a common cause, and this is the part that restores that connection without replacing the whole lockset.
2) Will the Schlage B520-409 tailpiece work with Yale knob hardware?
Yes, that is exactly what it is built for. Schlage supplies the B520-409 tailpiece and actuator for use with Yale knob hardware, so the cylinder engages the Yale knob assembly correctly. It is a Schlage-manufactured genuine part, not an aftermarket copy.
3) Do I need to replace the whole lockset or can I just change the tailpiece?
If the cylinder and the knob body are otherwise sound, the tailpiece alone is the repair. The B520-409 is a direct replacement component that restores original function without a full hardware replacement, which is why maintenance shops keep them on the shelf instead of buying complete locksets for a mechanical engagement problem.
4) Does the B520-409 come in different lengths or versions I have to choose from?
No options to specify. The B520-409 is sold as a single configuration of the tailpiece and actuator, so there is no length, finish or handing choice to make when ordering. Order it by the model number B520-409.
5) Is the tailpiece all I get, or does the actuator come with it?
Both. The B520-409 is supplied as a cylinder tailpiece and actuator together, so you get the piece that turns with the cylinder and the actuating component it drives. The cylinder itself, the knob and any keying are separate.
6) Is the B520-409 a commercial part or is it for residential locks?
Commercial. Schlage classes the B520-409 as a commercial-grade replacement component, and it is the kind of part used in offices, schools, healthcare facilities, retail, warehouses, multi-tenant residential buildings and municipal buildings where locks get serviced rather than swapped out.
How fast can I get the Schlage B520-409 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 B520-409 come with a warranty?
Absolutely. The Schlage B520-409 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 B520-409?
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 B520-409 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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