The Head Cover Assembly, cataloged under National Stock Number 4240-01-479-0547, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-479-0547 |
| Item Name | Head Cover Assembly |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| 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 |
| Reference | Meaning |
|---|---|
| H-200 | 3/1 Design control — primary reference 3m Company |
NSN 4240-01-479-0547 is a Head Cover Assembly, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 3590-01-551-0668, 4320-01-575-3257, 6515-01-641-4164. Verify interchangeability with system specifications before substitution.
Key specifications for 4240-01-479-0547: Special Features: TYVEK HEAD COVER ASSEMBLY, NIOSH, TC-19C-69. 0 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.