The Chin Strap,headgear, cataloged under National Stock Number 4240-01-470-3943, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4240-01-470-3943 |
| Item Name | Chin Strap,headgear |
| 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 |
|---|---|
| 7000126303 | 5/9 Secondary reference 3m Company |
| L-112-2 | 5/9 Secondary reference 3m Company Div Oh&esd |
| L-112-2 | 3/9 Design control — primary reference 3m Company |
NSN 4240-01-470-3943 is a Chin Strap,headgear, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5935-01-614-7665. Verify interchangeability with system specifications before substitution.
Key specifications for 4240-01-470-3943: Special Features: NIOSH CERTIFIED NO. TC23C-1938; End Item Identification: PAPR) POWERED AIR PURIFYING REGULATOR SYSTEMS. 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.