The Breathing Apparatus,oxygen Gener, cataloged under National Stock Number 4240-00-678-5263, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-00-678-5263 |
| Item Name | Breathing Apparatus,oxygen Gener |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Status | ACTIVE |
| Departure From Cited Document | MIL-B-51524/MU/ |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | N |
| Reference | Meaning |
|---|---|
| MILB51254 | 2/2 Government specification standardization U.S. Government activity |
NSN 4240-00-678-5263 is a Breathing Apparatus,oxygen Gener, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
Key specifications for 4240-00-678-5263: Departure From Cited Document: MIL-B-51524/MU/; Special Features: CANISTERS CANNOT BE CHANGED IN TOXIC ATMOSPHERE;FURNISHED W/CANISTERS,1,GREEN COLOR,W/QUICK STARTING DEVICE,2,GRAY COLOR,W/O QUICK STARTING DEVICE;W/CARRYING CASE;SPECIAL FEATURES,W/SPANNER WRENCH FOR HOSE COUPLINGS,W/ANTI-FOGGING KIT,W/HOOD,OXYGEN BREATHING APPARATUS. 1 specification is documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 4240-00-678-5263 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.