The Respirator,air Filtering, cataloged under National Stock Number 4240-01-250-0740, 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 Draeger Inc. Government technical data includes 3 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-250-0740 |
| Primary Part Number | R52972 |
| Item Name | Respirator,air Filtering |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Draeger Inc |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Approval Designator | ERR-060 |
| Material | RUBBER CHLOROPRENE CLASS CR MASK |
| 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 |
|---|---|
| R52972 PRIMARY | Draeger Inc (USA) |
| Reference | Meaning |
|---|---|
| R52972 | 5/9 Secondary reference Draeger Safety, Inc. |
| 421 R51525 | 3/9 Design control — primary reference Draeger Safety, Inc. |
NSN 4240-01-250-0740 is a Respirator,air Filtering, manufactured by Draeger Inc, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-250-0740 has 1 manufacturer part number on file: R52972 (Draeger Inc).
Key specifications for R52972: Criticality Code Justification: FEAT; Approval Designator: ERR-060; Special Features: SOLE SOURCE REQUIRED BY STATUTE 6.302; Material: RUBBER CHLOROPRENE CLASS CR MASK. 3 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.