The Nut,union, cataloged under National Stock Number 4730-01-183-1403, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Nut,union |
| FSC / FSG | 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings (FSG 47) |
| Parameter | Value |
|---|---|
| NSN | 4730-01-183-1403 |
| Item Name | Nut,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Reference | Meaning |
|---|---|
| 810-1385943 | D/9 Drawing number reference only U.S. Government activity |
| 810-1385943PC7 1/4 INCH | 3/2 Design control — primary reference U.S. Government activity |
| 15-12-0002 | 5/2 Secondary reference U.S. Government activity |
| 4675921 | D/9 Drawing number reference only U.S. Government activity |
| 1385943 | D/9 Drawing number reference only U.S. Government activity |
| 501-4675921 ITEM F8 | 5/2 Secondary reference U.S. Government activity |
NSN 4730-01-183-1403 is a Nut,union, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-189-4795, 4730-01-189-4797. Verify interchangeability with system specifications before substitution.
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.