The Hose Assembly,air Breathing, cataloged under National Stock Number 4720-00-810-7351, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-00-810-7351 |
| Item Name | Hose Assembly,air Breathing |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Status | ACTIVE |
| Hose Weight | 5.000 OUNCES PER LINEAR FOOT OZ |
| Measuring Method and Length | 71.000 INCHES NOMINAL OVERALL IN |
| Surface Treatment Document and Classification | MS22058-2 MIL SPEC SINGLE TREATMENT RESPONSE FIRST END COUPLING |
| Connection Style | ROUND SECOND END |
| Connection Type | THREADED FIRST END |
| Connection Type | THREADED SECOND END |
| Style Designator | FULLY CONVOLUTED W/ WIRE RINGS BETWEEN CONVOLUTIONS |
| Coupling Style | CONNECTOR, OXYGEN HOSE TO REGULATOR (NOTE: APPLICABLE TO HOSE ASSEMBLY, AIR BREATHING ONLY.) FIRST END |
| Material Document and Classification | QQ-W-423,FORM 1,COMP 302,COND 3 FED SPEC SINGLE MATERIAL RESPONSE REINFORCING WIRE |
| Material Document and Classification | MS22058-2 MIL SPEC ALL MATERIAL RESPONSES FIRST END COUPLING |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.250 INCHES NOMINAL IN |
| Operating Pressure | 20.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Inside Diameter | 0.750 INCHES NOMINAL FIRST END IN |
| End Overall Length | 1.000 INCHES NOMINAL SECOND END IN |
| Surface Treatment | CADMIUM FIRST END COUPLING |
| End Inside Diameter | 0.859 INCHES NOMINAL SECOND END IN |
| Material | STEEL CORROSION RESISTING REINFORCING WIRE |
| Material | PLASTIC POLYAMIDE NYLON SECOND PLY |
| Material | PLASTIC FIRST PLY |
| Material | STEEL AND COPPER ALLOY AND ALUMINUM FIRST END COUPLING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| GHN10345-3 | 5/2 Secondary reference U.S. Government activity |
| 4720PL0896030 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| MIL-H-81581/5 | 5/9 Secondary reference U.S. Government activity |
| MS24552-72A | 5/9 Secondary reference U.S. Government activity |
| MIL-DTL-81581 | 4/1 Identification reference U.S. Government activity |
| 8148650 | A/1 Packaging identification reference U.S. Government activity |
| MS22055B72 | 2/2 Government specification standardization U.S. Government activity |
NSN 4720-00-810-7351 is a Hose Assembly,air Breathing, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4720-00-909-9628. Verify interchangeability with system specifications before substitution.
Key specifications for 4720-00-810-7351: Hose Weight: 5.000 OUNCES PER LINEAR FOOT OZ; Measuring Method and Length: 71.000 INCHES NOMINAL OVERALL IN; Surface Treatment Document and Classification: MS22058-2 MIL SPEC SINGLE TREATMENT RESPONSE FIRST END COUPLING; Connection Style: ROUND SECOND END. 21 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 4720-00-810-7351 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.