BEST B92503 7-Pin Throw Member...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$3.90
$3.59
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BEST B92503 7-Pin Throw Member Cylinder Tailpiece for 9K Series Intruder Function

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Model: B92503

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

$3.90
$3.59
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BEST B92503 7-Pin Throw Member Cylinder Tailpiece for 9K Series Intruder Function

The BEST B92503 is a precision-engineered 7-Pin Throw Member designed as a cylinder tailpiece replacement component for the BEST 9K Series Intruder Function locksets. Purpose-built for commercial-grade mechanical lock servicing and maintenance, this replacement part ensures continued proper operation of the 9K Series cylinder assembly. Manufactured to BEST's exacting standards, the B92503 is an essential component for facility managers and locksmiths maintaining BEST 9K Series hardware in commercial environments.

Key Features

  • 7-Pin Configuration: Engineered specifically for 7-pin cylinder assemblies, ensuring precise mechanical engagement within the 9K Series lock platform.
  • 9K Series Compatibility: Designed exclusively for use with BEST 9K Series Intruder Function locksets, providing accurate fit and reliable performance without modification.
  • Cylinder Tailpiece Function: Serves as the critical throw member that transmits rotational force from the cylinder to the lock mechanism for dependable actuation.
  • Commercial-Grade Construction: Built to the tolerances required for commercial door hardware applications, supporting consistent performance in high-demand environments.
  • Genuine BEST Replacement Part: Sourced directly from BEST as an OEM accessory component, ensuring full compatibility and maintaining the integrity of the original lock assembly.
  • Drop-In Replacement: Engineered to match original factory specifications for straightforward integration into existing 9K Series installations during service or repair.

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: B92503
  • Features: BEST Parts & Accessories

Typical Applications

  • Commercial Office Building Lock Maintenance
  • Educational Facility Hardware Servicing
  • Healthcare Institution Lock Repair
  • Government and Municipal Building Maintenance
  • Industrial and Warehouse Facility Upkeep
  • Multi-Tenant Residential and Mixed-Use Property Servicing
  • Locksmith and Facility Management Repair Operations

Why BEST B92503?

BEST has long set the standard for commercial-grade lock components, and the B92503 7-Pin Throw Member reflects that commitment to precision and reliability. Designed as a genuine OEM replacement part for the 9K Series Intruder Function platform, this cylinder tailpiece delivers the accurate fit and mechanical dependability that commercial facility professionals require. When maintaining BEST 9K Series hardware, specifying the correct OEM component like the B92503 ensures the lock assembly performs as originally engineered.

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:
B92503
Features:
BEST Parts & Accessories

BEST B92503 – Frequently Asked Questions

1) What does the BEST B92503 throw member actually do inside a 9K lockset?
The B92503 is the cylinder tailpiece, or throw member, that carries rotation from the cylinder into the lock mechanism so the lock actuates when the key is turned. If a 9K Intruder Function lock turns at the key but the latch or lock function does not respond, a worn or wrong throw member is one of the parts a locksmith checks. It is a replacement part, not a complete cylinder or lock.
2) Will the B92503 work with a 6-pin BEST core, or does it have to be 7-pin?
Seven pin only. The B92503 is built for 7-pin cylinder assemblies, and the pin length of a BEST interchangeable core determines the depth the tailpiece has to reach. If the openings run 6-pin cores, this is the wrong throw member and you will need the 6-pin version of the part for that lock.
3) Does this BEST throw member fit any 9K Series lock, or only certain functions?
Only the Intruder Function locksets in the 9K Series. BEST builds throw members to match the specific lock function, so the B92503 is not a universal 9K part. Pull the function code off the existing lock before ordering; if it is a storeroom, classroom, office or other 9K function rather than Intruder, you need the throw member specified for that function.
4) Is the B92503 a genuine BEST part or an aftermarket copy?
It is an OEM BEST component, supplied as a factory replacement accessory for the 9K Series. That matters on a throw member because the tolerance between the core and the lock body is tight, and an off-spec tailpiece can bind or strip under normal keying.
5) Can I swap the B92503 in without taking the door off or re-prepping it?
No door work is needed. The B92503 is built to the original factory dimensions for the 9K Intruder Function lock, so it drops into an existing installation during service. It is an internal cylinder component, so the job is opening the lock, not modifying the door prep.
6) Is this BEST tailpiece suitable for a residential door lock?
The B92503 is classed as commercial hardware and is only useful if the lock on the door is a BEST 9K Series Intruder Function lockset, which is a commercial mechanical lock line. It does not serve residential deadbolts or knob sets. Facility types it typically shows up in are schools, hospitals, office buildings, municipal buildings and multi-tenant properties.
7) I manage a portfolio standardized on BEST 9K locks. How many of these should I stock?
Stock the B92503 against the count of 9K Intruder Function openings you actually have, not the whole 9K population, since the throw member is function-specific. It is one of the small internal parts that fails a lock without failing the core, so keeping a few on the shelf keeps a door working while the rest of the lock stays in service.
How fast can I get the BEST B92503 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 BEST B92503 come with a warranty?
Absolutely. The BEST B92503 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 BEST B92503?
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 BEST B92503 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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