The Harness Assembly,mask, cataloged under National Stock Number 4240-01-164-2157, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Biomarine Inc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 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 | 4240-01-164-2157 |
| Primary Part Number | 45-910 |
| Item Name | Harness Assembly,mask |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Biomarine Inc |
| Status | ACTIVE |
| General Characteristics Item Description | PART OF OUTER CASE AND HARNESS INSTALLATION |
| Reference Data and Literature | AF TO. 14S5-19-11 |
| 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 |
|---|---|
| 45-910 PRIMARY | Biomarine Inc (USA) |
NSN 4240-01-164-2157 is a Harness Assembly,mask, manufactured by Biomarine Inc, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-164-2157 has 1 manufacturer part number on file: 45-910 (Biomarine Inc).
3 possible matches (shared part number, not a government interchangeability claim): 5210-01-428-5562, 6525-01-501-6298, 6240-01-584-1829. Verify interchangeability with system specifications before substitution.
Key specifications for 45-910: General Characteristics Item Description: PART OF OUTER CASE AND HARNESS INSTALLATION; Reference Data and Literature: AF TO. 14S5-19-11; End Item Identification: BIO-PAK 45 MAXISEAL MASK ASSEMBLY4240-01-075-5550. 2 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.