Sargent 10-3634 SFIC Tailpiece - For 10X Mechanical Functions (2-1/4" Thick Door)
The Sargent 10-3634 is a genuine OEM Extended SFIC Tailpiece specifically engineered for the Sargent 10X Line of mechanical cylindrical locks. This precision-machined part is designed for specialized applications where a Small Format Interchangeable Core (SFIC) is used on a 2-1/4" thick door. Because standard tailpieces are too short to reach the internal retractor in oversized door preps, the 10-3634 provides the necessary extra length to ensure reliable, Grade 1 mechanical latch retraction.
Institutional Grade Features
- Extended Reach for Thick Doors: Specifically calibrated for 2-1/4" thick doors, providing the exact depth required for oversized wood or hollow metal institutional openings.
- SFIC Specific Interface: Engineered to seat perfectly into 6-pin or 7-pin Small Format Interchangeable Cores, ensuring zero-slip mechanical actuation and smooth key rotation.
- 10X Mechanical Optimization: Purpose-built for the mechanical architecture of the 10X series, synchronizing perfectly with the heavy-duty retractor for crisp latch operation.
- Hardened Alloy Construction: Manufactured to resist the increased twisting torque associated with longer tailpieces, preventing the bending or snapping common with "universal" aftermarket parts.
- Direct OEM Replacement: Restores factory-spec performance to your 10X lockset, maintaining your UL life-safety listings and Sargent’s institutional warranty.
Technical Specifications
- Manufacturer: Sargent (ASSA ABLOY)
- Model Number: 10-3634
- Compatible Series: Sargent 10X Line (Mechanical)
- Cylinder Type: Small Format Interchangeable Core (SFIC)
- Door Thickness: 2-1/4" (Thick Door)
- Part Type: Extended Mechanical Tailpiece

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