The Valve Core, cataloged under National Stock Number 2640-01-531-5124, is classified within Federal Supply Class 2640 (Tire Rebuilding and Tire and Tube Repair Materials) of the Tires and Tubes group. The manufacturer of record is Schrader-Bridgeport International Inc Dba Schrader Automotive. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2640-01-531-5124 |
| Primary Part Number | 5405B |
| Item Name | Valve Core |
| FSC / FSG | 2640 / 26 — Tire Rebuilding and Tire and Tube Repair Materials |
| Manufacturer | Schrader-Bridgeport International Inc Dba Schrader Automotive |
| Status | ACTIVE |
| Spring Tension Type | HIGH |
| Size Designation | STANDARD |
| Commercial Core Length Designator | STANDARD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 2640-01-531-5124 is a Valve Core, manufactured by Schrader-Bridgeport International Inc Dba Schrader Automotive, classified under FSC 2640, Tire Rebuilding and Tire and Tube Repair Materials. Status: active.
NSN 2640-01-531-5124 has 2 manufacturer part numbers on file: 5405B (Schrader-Bridgeport International Inc Dba Schrader Automotive), 918598 (L3 Technologies, Inc. Div L3 Keo).
Key specifications for 5405B: Spring Tension Type: HIGH; Size Designation: STANDARD; Special Features: DESCRIPTION: POSITIVE STOP STD CORE. POLYTETRAFLUOROETHYLENE COLOR: RED. WASHER: SILICONE. FINISH: UNPLATED. OPENING PRESSURE: HIGH.; Part Name Assigned by Controlling Agency: VALVE CORE. 3 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.