The Cover,ventilatory, cataloged under National Stock Number 2540-01-304-1978, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Item Name | Cover,ventilatory |
| FSC / FSG | 2540 — Vehicular Furniture and Accessories (FSG 25) |
| Parameter | Value |
|---|---|
| NSN | 2540-01-304-1978 |
| Item Name | Cover,ventilatory |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Status | ACTIVE |
| 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 |
|---|---|
| 6850001-077 | 5/9 Secondary reference Bae Systems Hagglunds Ab |
| 94778-991 | 3/9 Design control — primary reference U.s. Defense Services, Inc. Dba Usds |
| 6850001 | D/9 Drawing number reference only Bae Systems Hagglunds Ab |
NSN 2540-01-304-1978 is a Cover,ventilatory, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 2540-01-304-1994, 2540-01-304-2693. Verify interchangeability with system specifications before substitution.
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.