The Respirator,air Filtering, cataloged under National Stock Number 4240-01-311-5152, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-311-5152 |
| Item Name | Respirator,air Filtering |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Exhaust Valve | INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| AS10233X | 5/9 Secondary reference Racal Health and Safety Inc |
| 520-01-93 | 3/9 Design control — primary reference 3m Company Div Oh&esd |
| 520-01-93 | 5/9 Secondary reference 3m Company |
| 520-01-93 | 5/9 Secondary reference Racal Health and Safety Inc |
NSN 4240-01-311-5152 is a Respirator,air Filtering, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
Key specifications for 4240-01-311-5152: Criticality Code Justification: FEAT; Exhaust Valve: INCLUDED; Special Features: FURNISHED WITH DOUBLE SHOULDER-LENGTH SHROUD AND ACCOMODATES FACIAL HAIR AND GLASSES; SOLE SOURCE BY STATUTE 6.302. 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.