The Hose Assembly,air Breathing, cataloged under National Stock Number 4720-01-246-6012, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-246-6012 |
| 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 | 30.000 INCHES NOMINAL OVERALL IN |
| Connection Style | ROUND BOTH ENDS |
| 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 |
| Material Document and Classification | QQ-B-626,COMP 22,1/2 H FED SPEC SINGLE MATERIAL RESPONSE FIRST END COUPLING |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.250 INCHES NOMINAL IN |
| Outside Diameter | 1.094 INCHES MINIMUM AND 1.250 INCHES MAXIMUM BOTH ENDS IN |
| Operating Pressure | 20.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Features Provided | OZONE RESISTANT AND RESTRAINT CORD |
| Inside Diameter | 0.750 INCHES NOMINAL FIRST END 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 |
| Material | COPPER ALLOY FIRST END COUPLING |
| 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 |
|---|---|
| MIL-DTL-81581 | 4/1 Identification reference U.S. Government activity |
| MS22055B30 | 2/2 Government specification standardization U.S. Government activity |
NSN 4720-01-246-6012 is a Hose Assembly,air Breathing, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
Key specifications for 4720-01-246-6012: Hose Weight: 5.000 OUNCES PER LINEAR FOOT OZ; Measuring Method and Length: 30.000 INCHES NOMINAL OVERALL IN; Connection Style: ROUND BOTH ENDS; Style Designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED. 18 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.