The Facepiece Assembly,chemical-Biol, cataloged under National Stock Number 4240-01-529-0601, 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 Avon Protection Systems Incorporated Dba Avon Protection Systems Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 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 | 4240-01-529-0601 |
| Primary Part Number | 71000/2 |
| Item Name | Facepiece Assembly,chemical-Biol |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Avon Protection Systems Incorporated Dba Avon Protection Systems Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 71000/2 PRIMARY | Avon Protection Systems Incorporated Dba Avon Protection Systems Inc (USA) |
NSN 4240-01-529-0601 is a Facepiece Assembly,chemical-Biol, manufactured by Avon Protection Systems Incorporated Dba Avon Protection Systems Inc, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-529-0601 has 1 manufacturer part number on file: 71000/2 (Avon Protection Systems Incorporated Dba Avon Protection Systems Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-655-7896, 5975-01-657-7787. Verify interchangeability with system specifications before substitution.
Key specifications for 71000/2: End Item Identification: GAS MASKS. 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.
NSN 4240-01-529-0601 has DEMIL Code F. Demilitarization may be required before disposal or transfer to non-military entities.
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.