Falcon A12166-000-00 Spring fo...
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Falcon A12166-000-00 Spring for Cap Retaining Pin, 100-Pack Replacement Part

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Model: A12166-000-00

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

$23.14
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Falcon A12166-000-00 Spring for Cap Retaining Pin, 100-Pack Replacement Part

The Falcon A12166-000-00 is a genuine replacement spring designed specifically for the cap retaining pin in Falcon lock cylinders. Sold in a convenient 100-pack, this commercial-grade replacement part is ideal for facilities maintenance teams, locksmiths, and hardware professionals who require reliable stock of critical internal cylinder components. Sourced directly from Falcon, this spring ensures proper fit and function within compatible Falcon cylinder assemblies.

Key Features

  • Genuine Falcon Replacement Part: Manufactured to Falcon's original specifications, ensuring accurate fit and reliable performance within compatible lock cylinder assemblies.
  • Application-Specific Design: Engineered specifically for the cap retaining pin function within Falcon lock cylinders, maintaining proper internal component retention.
  • Bulk 100-Pack Quantity: Supplied in a 100-unit pack for efficient inventory management, reducing downtime during maintenance and service calls.
  • Commercial-Grade Quality: Rated for commercial applications, making these springs suitable for demanding, high-use environments requiring dependable hardware performance.
  • Cylinder Component Compatibility: Designed for use with Falcon cylinder products, supporting ongoing serviceability and long-term hardware upkeep.
  • Streamlined Maintenance Support: Having replacement springs on hand allows technicians to address cylinder servicing quickly without delays from special-order parts procurement.

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: A12166-000-00
  • Features: Falcon Lock Parts

Typical Applications

  • Commercial Office Building Lock Maintenance
  • Educational Facility Hardware Servicing
  • Healthcare Institution Security Upkeep
  • Retail Establishment Door Hardware Repair
  • Industrial and Warehouse Facility Maintenance
  • Locksmith and Hardware Professional Service Inventory
  • Government and Municipal Building Hardware Servicing

Why Falcon A12166-000-00?

Falcon lock parts are manufactured to precise commercial-grade standards, ensuring that replacement components integrate seamlessly into existing cylinder assemblies without compromise to function or security. The A12166-000-00 spring is purpose-built for cap retaining pin retention, providing the exact mechanical performance required for reliable cylinder operation. For facilities professionals and locksmiths who depend on consistent hardware quality, Falcon genuine replacement parts deliver the confidence of OEM-matched specifications.

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:
A12166-000-00
Features:
Falcon Lock Parts

Falcon A12166-000-00 – Frequently Asked Questions

1) What exactly is the Falcon A12166-000-00 part used for?
It is the small spring that works with the cap retaining pin inside Falcon lock cylinders, holding internal components in place. It is a genuine Falcon service part, not a complete cylinder, so it only helps if you are rebuilding or servicing a Falcon cylinder assembly and need that spring replaced.
2) Is the Falcon cap retaining pin spring sold individually or in bulk?
It ships as a 100-pack. That quantity suits a locksmith van stock or a facilities crew that rebuilds Falcon cylinders regularly; if you only need one spring for a single repair, you are still buying the full 100 count.
3) Will the A12166-000-00 spring fit a Schlage or BEST cylinder?
No. It is built to Falcon's own specifications for Falcon cylinder assemblies, so treat it as Falcon-only. For Schlage cylinder work, ZenSupply carries Schlage commercial cylinders such as the 20-021 rim cylinder, and for BEST interchangeable core work the 1C Series standard 5-pin core; neither uses this Falcon spring.
4) Is the Falcon A12166-000-00 spring a substitute for a complete cylinder, or do I need to buy a whole cylinder?
The Falcon A12166-000-00 is a genuine replacement spring for the cap retaining pin inside Falcon lock cylinders, sold in a 100-pack of internal service parts. It rebuilds an existing cylinder; it is not a cylinder itself. If the housing is damaged or you want to replace the unit outright, a complete cylinder such as the Schlage Commercial 20-021 6-pin rim cylinder with vertical tailpiece cam or the Corbin Russwin 1000 Grade 1 series mortise cylinder in 1-1/2 inch length with A02 straight cam is the item to order instead.
5) Our cylinder problem is on an aluminum storefront deadlock, not a Falcon lock. What should we order?
The Falcon A12166-000-00 is a cap retaining pin spring for Falcon lock cylinders and will not address storefront deadlock trim. For Adams Rite MS1847 deadlock and deadlatch systems, the Adams Rite 4024 cylinder pull mounts with a trim plate and the 4025 is a five pin tumbler cylinder pull using through-screws. The Adams Rite 4026 five pin tumbler cylinder pull is for the 5017 wood door deadlock and deadlatch instead, and the Adams Rite 4036 is a Grade 1 five-pin mortise cylinder with a 1/2 inch minimum door thickness.
6) We need a rim cylinder for an exit device, not a service spring. What are the options and how do they differ?
The Falcon A12166-000-00 is a bulk cap retaining pin spring for cylinder service work, not a rim cylinder. For rim applications, the Schlage 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam and two keys while the 20-022 is the same 6-pin rim cylinder with a horizontal tailpiece cam and two keys, so the cam orientation is the deciding detail. The Corbin Russwin 3070 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece, and the Medeco 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts.
7) Which part number do I order for the Falcon cylinder cap retaining pin spring?
Order model A12166-000-00. That is the Falcon designation for the cap retaining pin spring, and the 100-pack is the single orderable configuration.
8) I need a whole replacement cylinder, not an internal spring. What should I be looking at instead?
If the cylinder body itself is worn or you are rekeying to a different keyway, a spring won't help. Depending on the prep, look at a mortise cylinder such as the Corbin Russwin 1000 Grade 1 with an A02 straight cam, a rim cylinder like the Schlage 20-022 with horizontal tailpiece cam, or an interchangeable core setup like the BEST 1CB 150 Series. The A12166-000-00 is strictly an internal service spring for Falcon cylinders.
9) We service cylinders in-house. What complete mortise cylinder would we stock alongside Falcon cap retaining pin springs?
The Falcon A12166-000-00 covers the cap retaining pin spring for servicing Falcon cylinders. For complete mortise cylinders on the same bench, the Corbin Russwin 1070 Grade 1 series is a 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam, the Corbin Russwin 1080 Grade 1 series is a 1-1/2 inch large format interchangeable core mortise cylinder for Schlage L9000 mortise locks, and the Detex MC65 is a 1-1/8 inch 6-pin mortise cylinder in Schlage C keyway. Those differ in length, cam, and whether the core is interchangeable, so match them to the lock case you are working on.
10) Instead of rebuilding cylinders with small parts, what interchangeable core option lets us swap keying without disassembly?
Rebuilding with parts like the Falcon A12166-000-00 cap retaining pin spring keeps an existing cylinder in service. If the goal is rekeying without taking a cylinder apart, interchangeable core products handle it at the core: the BEST 1C series is a standard 5-pin cylinder core, the BEST 1CB is a 150 series interchangeable core cylinder in the Peaks line, and the BEST 1CDF is a drill-resistant patented interchangeable core with 7 pins in brass. The Schlage 20-057 is a 6-pin full size interchangeable core rim cylinder with a convertible tailpiece cam, and the 20-057-C is a full size interchangeable core in C keyway with a 643E aged bronze finish.
11) What looks like an alternative to the Falcon A12166-000-00 but will not do the same job?
The Falcon A12166-000-00 is an internal spring for the cap retaining pin in Falcon cylinders, supplied as a commercial-grade replacement part in bulk. Items that sit near it but serve a different purpose include the BEST 12E series dummy rim cylinder at 1-5/32 inch diameter, which is a non-keyed filler rather than a working part, the Emtek CY4 cylinder sold each, and retrofit cylinders such as the Medeco 1012040 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts or the Medeco 1065140 5-pin retrofit cylinder for the Arrow JL interconnected lock and Emtek handleset and deadbolt outside cylinder. Those replace or fill a cylinder opening; they do not rebuild a Falcon cylinder's internal pin retention.
12) If the failing cylinder is in a key-in-knob or key-in-deadbolt lock, is a Falcon spring the fix or should we swap the cylinder?
The Falcon A12166-000-00 spring addresses cap retaining pin retention inside Falcon cylinders. For key-in-knob and deadbolt applications where a full cylinder swap is simpler, the Kaba Ilco 1539 series is a key-in-knob and lever universal cylinder with a deadbolt function, the 1549 series is a key-in-deadbolt cylinder, the 1579 knob and lever cylinder is built for Sargent, and the 1599 is a key-in-knob replacement cylinder. Choose by the lock brand and whether you are working a knob, lever, or deadbolt.
13) Is this spring rated for commercial door hardware or just residential locks?
Commercial. It is catalogued as a commercial-grade Falcon lock part, which is why it turns up in office, school, healthcare, retail and municipal maintenance stock rather than residential repair kits.
14) For Emtek hardware, is there a cylinder option rather than servicing with Falcon internal springs?
Falcon A12166-000-00 springs are Falcon lock parts for cap retaining pin service. Emtek hardware is served by dedicated cylinders instead: the Emtek CY4 cylinder is sold each, the Medeco 1065244 is a 5-pin rim lazy motion rim type cylinder with an Emtek tailpiece, and the Medeco 1065140 is a 5-pin retrofit cylinder listed for the Emtek handleset and deadbolt outside cylinder as well as the Arrow JL interconnected lock.
How fast can I get the Falcon A12166-000-00 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 Falcon A12166-000-00 come with a warranty?
Absolutely. The Falcon A12166-000-00 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 Falcon A12166-000-00?
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 Falcon A12166-000-00 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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