The Hose,air Duct,air Breathing, cataloged under National Stock Number 4240-00-495-9145, 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 Mine Safety Appliances Company. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-00-495-9145 |
| Primary Part Number | 465589 |
| Item Name | Hose,air Duct,air Breathing |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Mine Safety Appliances Company |
| Status | ACTIVE |
| Hose Weight | 2.000 OUNCES PER LINEAR FOOT OZ |
| Measuring Method and Length | 21.000 INCHES NOMINAL OVERALL IN |
| Connection Style | ROUND FIRST END |
| Criticality Code Justification | FEAT |
| Connection Type | SOFT FIRST END |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.093 INCHES NOMINAL IN |
| Inside Diameter | 0.843 INCHES NOMINAL FIRST END IN |
| End Overall Length | 1.000 INCHES NOMINAL FIRST END IN |
| End Inside Diameter | 0.843 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 |
|---|---|
| 465589 PRIMARY | Mine Safety Appliances Company (USA) |
| Reference | Meaning |
|---|---|
| 449266 | 5/9 Secondary reference Mine Safety Appliances Company |
NSN 4240-00-495-9145 is a Hose,air Duct,air Breathing, manufactured by Mine Safety Appliances Company, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-00-495-9145 has 1 manufacturer part number on file: 465589 (Mine Safety Appliances Company).
Key specifications for 465589: Hose Weight: 2.000 OUNCES PER LINEAR FOOT OZ; Measuring Method and Length: 21.000 INCHES NOMINAL OVERALL IN; Connection Style: ROUND FIRST END; Criticality Code Justification: FEAT. 10 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.