The Nut,union, cataloged under National Stock Number 4730-01-141-1404, 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14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-141-1404 |
| 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 | 0.180 INCHES NOMINAL IN |
| Shoulder Width | 0.100 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| Thread Series | UNS |
| Material Document and Classification | QQ-B-750,COMP B FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.721 INCHES IN |
| Nut Height | 1.000 INCHES NOMINAL IN |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 11 |
| Material | COPPER ALLOY OVERALL |
| Smallest Inside Diameter | 1.438 INCHES MINIMUM AND 1.465 INCHES MAXIMUM IN |
| Shoulder Seat Diameter | 1.690 INCHES MINIMUM AND 1.830 INCHES MAXIMUM 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 |
|---|---|
| 592-4759152 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-141-1404 is a Nut,union, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-141-1404: Width Across Flats: 2.000 INCHES NOMINAL IN; Shoulder Step Width: 0.180 INCHES NOMINAL IN; Shoulder Width: 0.100 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN; Thread Series: UNS. 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.