The Facepiece,breathing Equipment, cataloged under National Stock Number 4240-01-312-2770, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4240-01-312-2770 |
| Item Name | Facepiece,breathing Equipment |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Status | ACTIVE |
| Facepiece Design | FULL |
| Facepiece Size Designation | UNIVERSAL |
| Spectacle Usage Provision | PROVIDED |
| Facepiece Speaking Diaphragm | NOT INCLUDED |
| Material | PLASTIC FACEPIECE LENS |
| Material | RUBBER CHLOROPRENE CLASS CR FACEPIECE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 520-01-99 | 5/9 Secondary reference 3m Company |
| 520-01-99 | 5/9 Secondary reference Racal Health and Safety Inc |
| 520-01-99 | 3/9 Design control — primary reference 3m Company Div Oh&esd |
| AS10236X | 5/9 Secondary reference Racal Health and Safety Inc |
NSN 4240-01-312-2770 is a Facepiece,breathing Equipment, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
Key specifications for 4240-01-312-2770: Facepiece Design: FULL; Facepiece Size Designation: UNIVERSAL; Spectacle Usage Provision: PROVIDED; Facepiece Speaking Diaphragm: NOT INCLUDED. 6 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 4240-01-312-2770 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.