The Nut,union, cataloged under National Stock Number 4730-01-422-9570, 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14 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-422-9570 |
| Item Name | Nut,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Width Across Flats | 2.000 INCHES NOMINAL IN |
| Shoulder Step Width | 0.250 INCHES NOMINAL IN |
| Shoulder Width | 0.560 INCHES NOMINAL IN |
| Thread Series | UN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.750 INCHES IN |
| Specification/standard Data | 81349-MIL-V-24630 GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | 3 FIGURE |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | COPPER ALLOY OVERALL |
| Smallest Inside Diameter | 1.378 INCHES NOMINAL IN |
| Shoulder Seat Diameter | 1.763 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 |
|---|---|
| MIL-DTL-24630/1 | 4/1 Identification reference U.S. Government activity |
| M24630/1-08N | 2/2 Government specification standardization U.S. Government activity |
| MIL-V-24630 | 5/9 Secondary reference U.S. Government activity |
| 085063AF | 5/1 Secondary reference U.S. Government activity |
| PLC-11440 | D/9 Drawing number reference only U.S. Government activity |
| PLC-11440-3/.500IPS | 5/1 Secondary reference U.S. Government activity |
NSN 4730-01-422-9570 is a Nut,union, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-422-9570: Width Across Flats: 2.000 INCHES NOMINAL IN; Shoulder Step Width: 0.250 INCHES NOMINAL IN; Shoulder Width: 0.560 INCHES NOMINAL IN; Thread Series: UN. 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.