The Nut,hose Coupling, cataloged under National Stock Number 4730-00-640-1031, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-640-1031 |
| Item Name | Nut,hose Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Largest Outside Diameter | 1.219 INCHES NOMINAL IN |
| Thread Series | UNEF |
| Material Document and Classification | QQ-A-225/5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.687 INCHES IN |
| Nut Height | 1.800 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE OVERALL |
| Hose Nominal Size | 0.875 INCHES IN |
| Nut Style | HOSE COUPLING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | ALUMINUM ALLOY 2017 OVERALL |
| Material | ALUMINUM ALLOY 2024 MOUNTING |
| Smallest Inside Diameter | 0.656 INCHES NOMINAL IN |
| 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 |
|---|---|
| 148-32110 | 5/9 Secondary reference Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company |
| 148-32110 | 5/1 Secondary reference Hydrasearch Company, Llc |
| MS24590-10 | 5/9 Secondary reference U.S. Government activity |
| MS24590-10AA | 2/2 Government specification standardization U.S. Government activity |
| 62G52-2 | 5/1 Secondary reference Westinghouse Electric Corp |
| 215-10D | 5/1 Secondary reference Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| MIL-DTL-5070 | 4/1 Identification reference U.S. Government activity |
NSN 4730-00-640-1031 is a Nut,hose Coupling, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-640-1031: Largest Outside Diameter: 1.219 INCHES NOMINAL IN; Thread Series: UNEF; Material Document and Classification: QQ-A-225/5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Thread Direction: RIGHT-HAND. 14 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.