The Hose,air Duct,air Breathing, cataloged under National Stock Number 4240-01-248-8166, 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 3m Company. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4240-01-248-8166 |
| Primary Part Number | 7100097709 |
| Item Name | Hose,air Duct,air Breathing |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | 3m Company |
| Status | ACTIVE |
| FSC Application Data | RESPIRATOR |
| Measuring Method and Length | 300.000 INCHES NOMINAL OVERALL IN |
| Criticality Code Justification | FEAT |
| Inside Diameter | 0.500 INCHES NOMINAL FIRST END IN |
| 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 |
|---|---|
| 7100097709 PRIMARY | 3m Company (USA) |
| Reference | Meaning |
|---|---|
| W-3020-25 | 5/9 Secondary reference 3m Company Div Oh&esd |
| W-3020-25 | 3/9 Design control — primary reference 3m Company |
NSN 4240-01-248-8166 is a Hose,air Duct,air Breathing, manufactured by 3m Company, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-248-8166 has 1 manufacturer part number on file: 7100097709 (3m Company).
Key specifications for 7100097709: FSC Application Data: RESPIRATOR; Measuring Method and Length: 300.000 INCHES NOMINAL OVERALL IN; Criticality Code Justification: FEAT; Inside Diameter: 0.500 INCHES NOMINAL FIRST END IN. 4 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.