The Hose,air Breathing, cataloged under National Stock Number 4720-01-180-7255, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-180-7255 |
| Item Name | Hose,air Breathing |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Status | ACTIVE |
| Measuring Method and Length | 11.500 INCHES NOMINAL OVERALL IN |
| Connection Style | ROUND FIRST END |
| Connection Type | THREADED FIRST END |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUNDROUND |
| Wall Thickness | 0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN |
| Features Provided | OZONE RESISTANT |
| Inside Diameter | 0.625 INCHES NOMINAL FIRST END IN |
| End Overall Length | 0.750 INCHES NOMINAL FIRST END IN |
| End Inside Diameter | 0.625 INCHES NOMINAL FIRST END IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MS27797-10-115 | 5/9 Secondary reference U.S. Government activity |
| 4720PL2198704 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| M26385-10-115 | 2/2 Government specification standardization U.S. Government activity |
| MIL-PRF-26385 | 4/1 Identification reference U.S. Government activity |
| 4720PL0887453 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 4720-01-180-7255 is a Hose,air Breathing, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 4720-01-359-6526, 4720-01-363-9315, 4720-01-516-6396. Verify interchangeability with system specifications before substitution.
Key specifications for 4720-01-180-7255: Measuring Method and Length: 11.500 INCHES NOMINAL OVERALL IN; Connection Style: ROUND FIRST END; Connection Type: THREADED FIRST END; Style Designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED. 10 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.
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.