The Regulator,positive Pressure,scba, cataloged under National Stock Number 4240-01-376-7439, 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2 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-376-7439 |
| Item Name | Regulator,positive Pressure,scba |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | FACEPIECE-MOUNTED WITH DONNING SWITCH; USED TO SUPPLY AND MAINTAIN AIR TO THE FACEPIECE TO SATISFY NEEDS OF USER,AT A PRESSURE GREATER THAN ATMOSPHERIC BY NO MORE THAN 1.5 INCHES OF WATER PRESSURE IN |
| 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 |
| Reference | Meaning |
|---|---|
| 804170-01 | 5/9 Secondary reference Avox Systems Inc Dba Avox Systems Inc |
| 804369-01 | 3/9 Design control — primary reference Scott Technologies, Inc. |
NSN 4240-01-376-7439 is a Regulator,positive Pressure,scba, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
Key specifications for 4240-01-376-7439: General Characteristics Item Description: FACEPIECE-MOUNTED WITH DONNING SWITCH; USED TO SUPPLY AND MAINTAIN AIR TO THE FACEPIECE TO SATISFY NEEDS OF USER,AT A PRESSURE GREATER THAN ATMOSPHERIC BY NO MORE THAN 1.5 INCHES OF WATER PRESSURE IN; Criticality Code Justification: FEAT; Special Features: USED WIT SCOTT AIR-PAK 4.5; SOLE SOURCE REQUIRED 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.