Falcon A12637 SFIC Tumbler Spr...
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Falcon A12637 SFIC Tumbler Springs Replacement Parts 500-Pack for Commercial Cylinder Maintenance

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Model: A12637-500-00

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

$40.80
$30.99
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Falcon A12637 SFIC Tumbler Springs, 500-Pack Replacement Parts for Commercial Cylinders

The Falcon A12637 SFIC Tumbler Springs are genuine replacement components designed to support the maintenance and servicing of Small Format Interchangeable Core (SFIC) cylinder systems in commercial applications. Supplied in a convenient 500-pack, these tumbler springs are engineered to Falcon's exacting standards, ensuring consistent performance and reliable cylinder operation in demanding institutional and commercial environments. Ideal for locksmiths, facility managers, and security professionals who require dependable replacement parts for ongoing cylinder upkeep.

Key Features

  • Genuine Falcon Replacement Parts: Authentic Falcon Lock Parts engineered to original specifications, ensuring compatibility and consistent performance in SFIC cylinder assemblies.
  • SFIC Cylinder Compatibility: Specifically designed for Small Format Interchangeable Core (SFIC) cylinders, supporting fast and efficient cylinder maintenance and rekeying operations.
  • High-Quantity 500-Pack: Supplied in a 500-pack quantity, making this an economical choice for facilities with large-scale cylinder maintenance programs or service contractors managing multiple installations.
  • Commercial-Grade Quality: Engineered for commercial applications where cylinder reliability and security performance are critical requirements.
  • Replacement Parts Category: Classified as a genuine replacement part within the Falcon Parts and Accessories line, designed to restore cylinders to factory specification.
  • Streamlined Servicing: Having an adequate supply of tumbler springs on hand minimizes downtime during cylinder disassembly, rekeying, or repair procedures.

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: A12637-500-00
  • Features: Falcon Lock Parts

Typical Applications

  • Commercial Office Building Cylinder Maintenance Programs
  • Educational Institution Locksmith and Security Services
  • Healthcare Facility Key Control and Cylinder Servicing
  • Government and Municipal Building Access Management
  • Hotel and Hospitality Master Key System Maintenance
  • Industrial and Warehouse Facility Security Upkeep
  • Professional Locksmith Service Operations

Why Falcon A12637?

Falcon is a trusted name in commercial door hardware, and the A12637 SFIC Tumbler Springs reflect the brand's commitment to precision-engineered replacement components. These genuine Falcon Lock Parts are built to restore SFIC cylinders to factory performance standards, providing the consistency and reliability that commercial facilities and professional locksmiths depend on. When cylinder integrity matters, specifying authentic Falcon replacement parts ensures the job is done right the first time.

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:
A12637-500-00
Features:
Falcon Lock Parts

Falcon A12637-500-00 – Frequently Asked Questions

1) What are Falcon A12637 tumbler springs used for?
They are the small coil springs that sit above each pin stack inside a Small Format Interchangeable Core (SFIC) cylinder. Falcon supplies the A12637 as a genuine replacement part, model A12637-500-00, in a 500 spring pack, so a locksmith or facility shop can restock the springs that get stretched, kinked, or lost during pinning and rekeying work.
2) Will these springs work in a small format interchangeable core from another brand?
Falcon states the A12637 springs are made for Small Format Interchangeable Core cylinders to original Falcon specification. SFIC is an industry format, but the only compatibility on record here is with Falcon SFIC cylinders, so for a core from another maker order that maker's own spring pack rather than assuming a match.
3) I need a whole replacement core, not springs. What should I order instead?
Springs alone will not get a door working again if the core itself is worn or you need a different keyway. For a complete small format interchangeable core, the BEST 1C Series standard 5-pin core is the direct equivalent item type, and the BEST Peaks 1CB 150 Series interchangeable core is an option where you want a patented, controlled key system. For drill resistance in a 7-pin brass core, look at the BEST 1CDF Series.
4) Will Falcon A12637 tumbler springs work in a full size interchangeable core?
The Falcon A12637 springs are specified for Small Format Interchangeable Core (SFIC) cylinders. For a full size interchangeable core opening, the core itself is a different part: the Schlage 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam, and the Schlage 20-057-C is a full size interchangeable core in C keyway, 643E Aged Bronze. Match your spring stock to the core format you actually service.
5) I need a complete small format interchangeable core, not loose spring parts - what should I order instead of the Falcon A12637?
The Falcon A12637-500-00 is a 500-pack of SFIC tumbler springs, a replacement part for rebuilding and rekeying cylinders rather than a finished core. If you need an assembled interchangeable core to drop into a housing, the BEST 1C5 is a standard 5-pin cylinder core, and the BEST Peaks 1CB is a 150 Series interchangeable core cylinder. Those go into the door as complete cores; the Falcon springs are consumables for the bench.
6) How many springs come in the Falcon A12637 pack?
500 springs per pack. For a 6-pin SFIC core, which uses a spring per chamber, that pack covers a large rekeying program or a service van that pins cores all week rather than a one-off repair. If you only need to fix a single core, this is far more than the job requires.
7) My cylinder is a mortise type - do the Falcon A12637 springs apply, or do I need a different part?
The Falcon A12637 springs are SFIC cylinder components. A mortise cylinder is an assembly ordered by length and cam: the Corbin Russwin 1000 Grade 1 Series mortise cylinder is 1-1/2 inch with an A02 straight cam, the Corbin Russwin 1070 is a 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam, and the Adams Rite 4036 is a Grade 1 five-pin mortise cylinder. If your service work is on mortise housings rather than small format cores, order the cylinder that matches your cam and length.
8) For a high security rekeying program, is there a drill resistant core to pair with SFIC service work?
The Falcon A12637 tumbler springs are genuine Falcon replacement parts for restoring SFIC cylinders to factory specification, with no security rating of their own. Where the program calls for a hardened core, the BEST 1CDF is a drill resistant patented interchangeable core, 7-pin brass, 150 Series. A facility can stock the Falcon springs for routine cylinder servicing and specify the 1CDF cores on the openings that need the higher protection.
9) I need to replace a worn key-in-knob cylinder - are the Falcon A12637 springs what I want?
No. The Falcon A12637 is a 500-pack of loose SFIC tumbler springs for cylinder rebuilding. To swap out a key-in-knob or lever cylinder as a unit, the Kaba Ilco 1539 Series is a key-in-knob and lever universal cylinder, the 1599 is a key-in-knob replacement cylinder, and the 1579 is a knob and lever cylinder for Sargent. Those are ordered as complete cylinders for the lock body.
10) Are these springs suitable for a commercial master key system, or are they residential grade?
Falcon lists the A12637 as a commercial part, built for institutional and commercial SFIC cylinder work such as school and campus locksmith shops, healthcare key control, government buildings, and hotel master key maintenance.
11) Is this a genuine Falcon part or an aftermarket spring?
Genuine Falcon. The A12637 is catalogued by Falcon as an authentic Falcon Lock Part built to original specification so cores are restored to factory performance rather than mixed with generic hardware.
12) What looks like an alternative to the Falcon A12637 but is not usable for SFIC cylinder maintenance?
Rim cylinders and cylinder pulls sit in the same cylinder aisle but serve a different purpose. The Schlage 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam and the 20-022 is the horizontal tailpiece cam version; the Corbin Russwin 3070 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece; the Adams Rite 4025 is a five pin tumbler cylinder pull with through-screws for the MS1847 deadlock. None of those substitute for the Falcon A12637 SFIC tumbler springs, which are a commercial replacement part consumed during cylinder disassembly, rekeying, and repair.
13) Is there a non-keyed option if the opening only needs the look of a cylinder?
The Falcon A12637 springs only make sense where a working SFIC cylinder is being rebuilt. If an opening needs a cylinder appearance without keyed function, the BEST 12E Series dummy rim cylinder with a 1-5/32 inch diameter fills the prep without pins or springs. Keep the Falcon spring stock for the cylinders that are actually keyed into the master key system.
How fast can I get the Falcon A12637-500-00 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 A12637-500-00 come with a warranty?
Absolutely. The Falcon A12637-500-00 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 A12637-500-00?
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 A12637-500-00 from ZenSupply?
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