The Hose Assembly,air Breathing, cataloged under National Stock Number 4720-01-672-5081, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4720-01-672-5081 |
| Item Name | Hose Assembly,air Breathing |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Status | ACTIVE |
| Measuring Method and Length | 24.00 INCHES NOMINAL WORKING IN |
| Temp Rating | -65.0 FAHRENHEIT AND 260.0 FAHRENHEIT DEGF |
| Connection Type | COUPLING BOTH ENDS |
| Style Designator | SLEEVE SECTION |
| Coupling Style | THREADED INTERNAL BOTH ENDS |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.375 INCHES NOMINAL BOTH ENDS IN |
| Features Provided | OZONE RESISTANT |
| Nominal Thread Size | 0.5000 INCHES BOTH ENDS IN |
| Inside Diameter | 0.250 INCHES NOMINAL BOTH ENDS IN |
| Thread Class | 3B BOTH ENDS |
| Thread Quantity Per Inch | 20 BOTH ENDS |
| Material | STEEL CORROSION RESISTING REINFORCING WIRE |
| Material | STEEL STAINLESS - USE STB000 BOTH END COUPLINGS |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) BOTH ENDS |
| 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 |
|---|---|
| M26626-5-0024 | 2/2 Government specification standardization U.S. Government activity |
| MIL-PRF-26626 | 4/1 Identification reference U.S. Government activity |
| MIL-PRF-26626F | 5/9 Secondary reference U.S. Government activity |
NSN 4720-01-672-5081 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): 4720-01-672-5102. Verify interchangeability with system specifications before substitution.
Key specifications for 4720-01-672-5081: Measuring Method and Length: 24.00 INCHES NOMINAL WORKING IN; Temp Rating: -65.0 FAHRENHEIT AND 260.0 FAHRENHEIT DEGF; Connection Type: COUPLING BOTH ENDS; Style Designator: SLEEVE SECTION. 15 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.