Sargent 10-3631 Standard LFIC Tailpiece - For 10X Mechanical Functions
The Sargent 10-3631 is a genuine OEM Standard LFIC Tailpiece engineered specifically for the Sargent 10X Line of mechanical cylindrical locks. This precision-machined component serves as the mechanical link between a Large Format Interchangeable Core (LFIC) and the internal retractor of the 10X chassis. Designed for the rigors of institutional use, the 10-3631 ensures that your master key system operates with zero "slop," providing crisp, reliable latch retraction every time the key is turned.
Institutional Grade Features
- 10X Mechanical Optimization: Purpose-built for the mechanical architecture of the 10X series, ensuring the tailpiece timing is perfectly synchronized with the heavy-duty Grade 1 retractor.
- LFIC Specific Interface: Designed to seat securely into the rear of Sargent LFIC cylinders, preventing the mechanical "binding" often found with generic or worn-out tailpieces.
- Standard Door Compatibility: Calibrated for use on doors with a thickness of 1-3/8" to 2", fitting the vast majority of commercial and institutional door preps.
- Hardened Steel Construction: Manufactured from high-strength alloys to resist the twisting torque and mechanical fatigue associated with high-frequency key access.
- Direct OEM Replacement: Using the 10-3631 ensures your hardware remains within factory specifications, maintaining the UL life-safety listings and Sargent’s institutional warranty.
Technical Specifications
- Manufacturer: Sargent (ASSA ABLOY)
- Model Number: 10-3631
- Compatible Series: Sargent 10X Line (Mechanical)
- Cylinder Type: Large Format Interchangeable Core (LFIC)
- Door Thickness: 1-3/8" - 2"
- Part Type: Mechanical Tailpiece / Cylinder Linkage

| Brand | Sargent |
| Series | Sargent - 10X Line |
| Key Length | 6 Pin |
| Cylinder Part Type | Tailpiece |
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