The Hose Assembly,air Breathing, cataloged under National Stock Number 4720-01-442-5831, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Hydraflow. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-442-5831 |
| Primary Part Number | 45413-7 |
| Item Name | Hose Assembly,air Breathing |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Hydraflow |
| Status | ACTIVE |
| Connection Type | THREADED BOTH ENDS |
| Style Designator | SLEEVE SECTION |
| Coupling Style | THREADED INTERNAL BOTH ENDS |
| Cross-Sectional Shape Style | ROUNDROUND |
| Nominal Thread Size | 0.500 INCHES BOTH ENDS IN |
| Inside Diameter | 0.250 INCHES NOMINAL FIRST END IN |
| Material | RUBBER SILICONE CLASS Q FIRST PLY |
| Material | PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) SECOND PLY |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 45413-7 PRIMARY | Hydraflow (USA) |
| Reference | Meaning |
|---|---|
| C7590-7 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 4720-01-442-5831 is a Hose Assembly,air Breathing, manufactured by Hydraflow, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-442-5831 has 1 manufacturer part number on file: 45413-7 (Hydraflow).
Key specifications for 45413-7: Connection Type: THREADED BOTH ENDS; Style Designator: SLEEVE SECTION; Coupling Style: THREADED INTERNAL BOTH ENDS; Cross-Sectional Shape Style: ROUNDROUND. 9 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.