The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-00-491-3071, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 30 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-00-491-3071 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Status | ACTIVE |
| Measuring Method and Length | 52.000 INCHES NOMINAL OVERALL IN |
| Flange Thickness | 0.440 INCHES NOMINAL SECOND END IN |
| Minimum Inside Bending Radius | 3.250 INCHES IN |
| Connection Style | SWIVEL NUT FLARE FIRST END |
| Connection Style | RAISED SWIVEL SECOND END |
| End Connection Design | STRAIGHT FIRST END |
| End Connection Design | STRAIGHT SECOND END |
| Layer Composition and Location | 2ND LAYER BRAIDED CORROSION RESISTANT STEEL WIRE AND 1ST LAYER BRAIDED WIRE AND 3RD LAYER RUBBER IMPREGNATED COTTON FABRIC |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Connection Type | RAISED FACE FLANGE SECOND END |
| Bolt Hole Diameter | 0.425 INCHES NOMINAL SECOND END IN |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.625 INCHES NOMINAL IN |
| Flange Length | 3.290 INCHES NOMINAL SECOND END IN |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 1.063 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Inside Diameter | 0.750 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Bolt Hole Quantity | 2 SECOND END |
| Bolt Circle Diameter | 2.500 INCHES NOMINAL SECOND END IN |
| Raised Face Diameter | 0.025 INCHES NOMINAL SECOND END IN |
| Raised Face Height | 1.500 INCHES NOMINAL SECOND END IN |
| Media for Which Designed | AIR AND FUEL/OIL, HYDROCARBON AND WATER SINGLE RESPONSE |
| Flange Width | 1.850 INCHES NOMINAL SECOND END IN |
| Thread Class | 2B FIRST END |
| Thread Quantity Per Inch | 12 FIRST END |
| Thread Series Designator | UN FIRST END |
| Flange Style | OVAL SECOND END |
| End Flange Construction | SOLID SECOND END |
| 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 |
|---|---|
| 3050859-2 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4720-00-491-3071 is a Hose Assembly,nonmetallic, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
Key specifications for 4720-00-491-3071: Measuring Method and Length: 52.000 INCHES NOMINAL OVERALL IN; Flange Thickness: 0.440 INCHES NOMINAL SECOND END IN; Minimum Inside Bending Radius: 3.250 INCHES IN; Connection Style: SWIVEL NUT FLARE FIRST END. 30 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.