The Cylinder,lock,vehicular, cataloged under National Stock Number 2540-01-189-0991, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 2540-01-189-0991 |
| Item Name | Cylinder,lock,vehicular |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Status | ACTIVE |
| General Characteristics Item Description | AL BODY; THD SHAFT 0.750-20 UNEF 3A; THD LG 0.750 IN.; W/TWO KEYS A |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Reference | Meaning |
|---|---|
| 020725 | 3/9 Design control — primary reference Big Joe Mfg Co |
NSN 2540-01-189-0991 is a Cylinder,lock,vehicular, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6515-01-497-2226. Verify interchangeability with system specifications before substitution.
Key specifications for 2540-01-189-0991: General Characteristics Item Description: AL BODY; THD SHAFT 0.750-20 UNEF 3A; THD LG 0.750 IN.; W/TWO KEYS A. 1 specification is 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.