The Hose Assembly,air Duct,air Breat, cataloged under National Stock Number 4240-00-495-9146, 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 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4240-00-495-9146 |
| Primary Part Number | 801165 |
| Item Name | Hose Assembly,air Duct,air Breat |
| 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 | 24.000 INCHES NOMINAL OVERALL IN |
| Criticality Code Justification | FEAT |
| Connection Type | COUPLING FIRST END |
| Connection Type | COUPLING SECOND END |
| Style Designator | SLEEVE SECTION |
| Coupling Style | THREADED INTERNAL FIRST END |
| Coupling Style | THREADED EXTERNAL SECOND END |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.093 INCHES NOMINAL IN |
| Nominal Thread Size | 0.375 INCHES FIRST END IN |
| Nominal Thread Size | 0.343 INCHES SECOND END IN |
| Inside Diameter | 0.750 INCHES NOMINAL FIRST END IN |
| Thread Quantity Per Inch | 16 SECOND END |
| Material | COPPER ALLOY OR STEEL CORROSION RESISTING FIRST END COUPLING |
| Material | COPPER ALLOY OR STEEL CORROSION RESISTING SECOND END COUPLING |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) BOTH ENDS |
| 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 |
|---|---|
| 801165 PRIMARY | Mine Safety Appliances Company (USA) |
| Reference | Meaning |
|---|---|
| 449267 | 5/9 Secondary reference Mine Safety Appliances Company |
NSN 4240-00-495-9146 is a Hose Assembly,air Duct,air Breat, manufactured by Mine Safety Appliances Company, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-00-495-9146 has 1 manufacturer part number on file: 801165 (Mine Safety Appliances Company).
Key specifications for 801165: Hose Weight: 2.000 OUNCES PER LINEAR FOOT OZ; Measuring Method and Length: 24.000 INCHES NOMINAL OVERALL IN; Criticality Code Justification: FEAT; Connection Type: COUPLING FIRST END. 17 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.