The Liner,flyer's Helmet, cataloged under National Stock Number 8415-01-534-8409, is classified within Federal Supply Class 8415 (Clothing, Special Purpose) of the Clothing, Individual Equipment, and Insignia group. The manufacturer of record is Gentex Corp. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 8415-01-534-8409 |
| Primary Part Number | 05D11925-4 |
| Item Name | Liner,flyer's Helmet |
| FSC / FSG | 8415 / 84 — Clothing, Special Purpose |
| Manufacturer | Gentex Corp |
| Status | ACTIVE |
| Garment Size | LARGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 05D11925-4 PRIMARY | Gentex Corp (USA) |
| 05D11925-4 | Csw Associates Ltd Chappell Salikin Weil Associates Pty (AUS) |
| D11925-4 | Trade Company Srl (ITA) |
| Reference | Meaning |
|---|---|
| 10375774 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 8415PL2001279 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 8415-01-534-8409 is a Liner,flyer's Helmet, manufactured by Gentex Corp, classified under FSC 8415, Clothing, Special Purpose. Status: active.
NSN 8415-01-534-8409 has 3 manufacturer part numbers on file: 05D11925-4 (Gentex Corp), 05D11925-4 (Csw Associates Ltd Chappell Salikin Weil Associates Pty), D11925-4 (Trade Company Srl).
1 possible match (shared part number, not a government interchangeability claim): 8475-01-540-9670. Verify interchangeability with system specifications before substitution.
Key specifications for 05D11925-4: Garment Size: LARGE; Part Name Assigned by Controlling Agency: XLINER, HGU ASSEMBLY, 3/4 THICK; End Item Identification: HGU-55/P, HGU-68/P AND HGU-84/P. 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.