The Hose Assembly,air Breathing, cataloged under National Stock Number 4720-00-692-3939, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4720-00-692-3939 |
| 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 | 48.000 INCHES NOMINAL OVERALL IN |
| Connection Style | ROUND BOTH ENDS |
| Connection Type | COUPLING SECOND END |
| Connection Type | SOFT FIRST END |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Coupling Style | OXYGEN HOSE CLAMP FIRST END |
| Coupling Style | CONNECTOR, OXYGEN HOSE TO REGULATOR W/ CLIP (NOTE: APPLICABLE TO HOSE ASSEMBLY, AIR BREATHING ONLY.) SECOND END |
| Cross-Sectional Shape Style | ROUNDROUND |
| Outside Diameter | 1.094 INCHES MINIMUM AND 1.250 INCHES MAXIMUM BOTH ENDS IN |
| Features Provided | OZONE RESISTANT |
| Inside Diameter | 0.750 INCHES NOMINAL BOTH ENDS IN |
| End Overall Length | 0.938 INCHES MINIMUM AND 1.062 INCHES MAXIMUM BOTH ENDS IN |
| End Inside Diameter | 0.844 INCHES MINIMUM AND 0.875 INCHES MAXIMUM BOTH ENDS IN |
| Material | COPPER ALLOY SECOND END COUPLING |
| Material | COTTON AND FIBERGLASS FIRST PLY |
| 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 |
|---|---|
| MS22055A48 | 2/2 Government specification standardization U.S. Government activity |
| MIL-DTL-81581 | 4/1 Identification reference U.S. Government activity |
| MIL-H-81581/5 | 5/9 Secondary reference U.S. Government activity |
| AN6003-48A | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| AN60003-48A | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4720-00-692-3939 is a Hose Assembly,air Breathing, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4720-00-810-7351, 4720-00-909-9628. Verify interchangeability with system specifications before substitution.
Key specifications for 4720-00-692-3939: Hose Weight: 5.000 OUNCES PER LINEAR FOOT OZ; Measuring Method and Length: 48.000 INCHES NOMINAL OVERALL IN; Connection Style: ROUND BOTH ENDS; Connection Type: COUPLING SECOND END. 16 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 4720-00-692-3939 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.