The Filter,respirator,air Filtering, cataloged under National Stock Number 4240-01-323-3526, 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 3m Company. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-323-3526 |
| Primary Part Number | 7000131701 |
| Item Name | Filter,respirator,air Filtering |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | 3m Company |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 7000131701 PRIMARY | 3m Company (USA) |
| Reference | Meaning |
|---|---|
| 520-01-34R20 | 5/9 Secondary reference Racal Health and Safety Inc |
| 450-01-01R20 | 5/9 Secondary reference Racal Health and Safety Inc |
| 450-01-01R20 | 3/9 Design control — primary reference 3m Company |
| 450-01-01R20 | 5/9 Secondary reference 3m Company Div Oh&esd |
NSN 4240-01-323-3526 is a Filter,respirator,air Filtering, manufactured by 3m Company, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-323-3526 has 1 manufacturer part number on file: 7000131701 (3m Company).
Key specifications for 7000131701: Criticality Code Justification: FEAT; Special Features: SOLE SOURCE REQUIRED BY STATUTE 6.302. 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.