The Nut,union, cataloged under National Stock Number 4730-01-145-1832, 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 13 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-145-1832 |
| Item Name | Nut,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Width Across Flats | 1.375 INCHES NOMINAL IN |
| Shoulder Step Width | 0.562 INCHES NOMINAL IN |
| Shoulder Width | 0.250 INCHES NOMINAL IN |
| Thread Series | UN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.1875 INCHES IN |
| Nut Height | 1.000 INCHES NOMINAL IN |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Smallest Inside Diameter | 0.878 INCHES NOMINAL IN |
| Shoulder Seat Diameter | 0.872 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 |
|---|---|
| 810-1385943 ITE | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 501-4686015 ITEM F5 | 5/2 Secondary reference U.S. Government activity |
| 14-11-0202 | 3/2 Design control — primary reference U.S. Government activity |
| 810-1385943 PIECE 6 | 5/2 Secondary reference U.S. Government activity |
| 501-4686015 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-145-1832 is a Nut,union, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-145-1832: Width Across Flats: 1.375 INCHES NOMINAL IN; Shoulder Step Width: 0.562 INCHES NOMINAL IN; Shoulder Width: 0.250 INCHES NOMINAL IN; Thread Series: UN. 13 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.