Schlage B520-243 Lazy Tailpiec...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$29.43
Schlage B520-243 Lazy Tailpiece for B250/460 IC Core and S200 Series Single Cylinder

Schlage B520-243 Lazy Tailpiece for B250/460 IC Core and S200 Series Single Cylinder

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Model: B520-243

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

$29.43
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Schlage B520-243 Lazy Tailpiece for B250/460 IC Core and S200 Series Single Cylinder

The Schlage B520-243 is a replacement lazy tailpiece engineered for precise compatibility with Schlage B250/460 IC Core cylinders on doors over 2-1/8" to 2-5/8" thick, as well as S200 Series locks manufactured before February 26, 2008, on doors with 1-5/8" to 2" thickness. Designed as a 2.6" single cylinder tailpiece, this commercial-grade replacement part ensures proper cylinder engagement and reliable lock operation in demanding door hardware applications.

Key Features

  • Precise Door Thickness Compatibility: Engineered for use with B250/460 IC Core cylinders on doors over 2-1/8" to 2-5/8", as well as S200 Series applications (before February 26, 2008) with 1-5/8" to 2" door thickness.
  • Single Cylinder Configuration: Designed as a 2.6" single cylinder tailpiece, ensuring accurate fit and smooth cylinder operation.
  • IC Core Compatibility: Specifically designed to integrate with Schlage B250/460 Interchangeable Core (IC Core) cylinders for professional keying system installations.
  • S200 Series Support: Compatible with Schlage S200 Series locks produced before February 26, 2008, providing a reliable replacement solution for legacy hardware.
  • Commercial-Grade Replacement Part: Manufactured to Schlage’s quality standards as an OEM replacement component for professional door hardware maintenance and repair.
  • Targeted Application Fit: Classified as a cylinder tailpiece, ensuring mechanical precision and correct actuation geometry for compatible lock bodies.

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: B520-243
  • Features: Schlage Parts

Typical Applications

  • Commercial Office Buildings Requiring IC Core Cylinder Maintenance
  • Educational Facilities Using Schlage Interchangeable Core Keying Systems
  • Healthcare Institutions with Schlage B250/460 IC Core Installations
  • Government and Municipal Buildings with Legacy S200 Series Hardware
  • Hospitality Properties Maintaining Schlage Commercial Lock Systems
  • Industrial and Warehouse Facilities with Commercial Mechanical Locks
  • Multi-Tenant Residential and Mixed-Use Properties with Commercial-Grade Door Hardware

Why Schlage B520?

Schlage replacement parts like the B520-243 are manufactured to the same quality standards as original equipment, ensuring proper fit and dependable mechanical performance in compatible B250/460 IC Core and S200 Series lock assemblies. For facilities managers and professional locksmiths, using genuine Schlage tailpiece components maintains the integrity of the cylinder actuation system and supports long-term reliability across commercial door hardware installations.

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:
B520-243
Features:
Schlage Parts

Schlage B520-243 – Frequently Asked Questions

1) What door thickness does the Schlage B520-243 lazy tailpiece cover?
It depends which lock you are working on. With Schlage B250/460 interchangeable core cylinders, the B520-243 covers doors over 2-1/8 inches up to 2-5/8 inches thick. On S200 Series locks built before February 26, 2008, it covers 1-5/8 inch to 2 inch doors. The tailpiece itself measures 2.6 inches and is a single cylinder part.
2) Will the B520-243 tailpiece work on an S200 Series lock made after February 2008?
No. The B520-243 is specified for S200 Series locks manufactured before February 26, 2008. Schlage changed the S200 build after that date, so on a newer S200 you need the tailpiece specified for the current production, not this one. Check the lock's date of manufacture before ordering.
3) I have a double cylinder deadbolt - is the B520-243 the right tailpiece?
No. The B520-243 is built as a single cylinder tailpiece, keyed one side with a thumbturn or blank plate on the other. A double cylinder application, keyed both sides, uses a different tailpiece length and configuration.
4) My door is exactly 2-1/8 inches thick with a B250 IC core deadbolt - does this tailpiece fit?
Not quite. The B520-243 range for B250/460 IC core starts above 2-1/8 inches and runs to 2-5/8 inches. At exactly 2-1/8 inches you are at the bottom edge of that window and need the shorter tailpiece for the thinner door range instead. Measure the finished door including any applied material before choosing.
5) What exactly is a lazy tailpiece and what does the B520-243 do in the lock?
The tailpiece is the flat blade that runs from the back of the cylinder into the lock body and turns the retractor when the key turns. A lazy tailpiece has free play built in, so it only drives the lock through part of its rotation instead of being rigidly fixed to the plug. The B520-243 is the single cylinder version of that part for Schlage B250/460 IC core and pre-2008 S200 locks, sold as a replacement component rather than a complete cylinder.
6) Does the B520-243 come with a cylinder or core?
No cylinder and no core. It is a replacement tailpiece only, intended for rekeying and repair work where the cylinder or core is already in hand. If you are replacing a damaged core as well, that is a separate Schlage IC core order.
7) Is the Schlage B520-243 tailpiece suitable for commercial buildings and institutional keying systems?
Yes. It is classified as commercial door hardware and is the tailpiece used with Schlage B250/460 interchangeable core cylinders, which is what schools, hospitals, offices and government facilities run for master keying. Keeping the correct tailpiece on hand is what lets a facility swap cores without pulling the lock apart further.
How fast can I get the Schlage B520-243 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 B520-243 come with a warranty?
Absolutely. The Schlage B520-243 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 B520-243?
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 B520-243 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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