The Nut,union, cataloged under National Stock Number 4730-01-235-8515, 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13 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-235-8515 |
| Item Name | Nut,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Width Across Flats | 1.625 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OR ASTMA276-79A ASSN STD SINGLE MATERIAL RESPONSE OVERALL A |
| Maximum Working Pressure Rating and Service for Which Designed | 3000.0 POUNDS PER SQUARE INCH (PSI) AIR LBS |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.500 INCHES IN |
| Nut Height | 0.750 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 304 OVERALL |
| 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 |
|---|---|
| 7683-28902 | 7/9 Vendor item drawing reference Hughes Missile Systems Co San Diego |
| H850N-16-SS | 3/2 Design control — primary reference U.S. Government activity |
| 7683-28902-006 | 5/9 Secondary reference Hughes Missile Systems Co San Diego |
| 7683-28902-006 | 5/9 Secondary reference U.S. Government activity |
| 7683-28902 | C/1 Advisory reference — outside the item-of-supply concept Raytheon Company |
| 7683-28902-006 | 3/2 Design control — primary reference U.S. Government activity |
| 7683-28902-006 | 5/9 Secondary reference Gulf Coast Holdings, Inc Dba Unidynamics |
NSN 4730-01-235-8515 is a Nut,union, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-235-8515: Width Across Flats: 1.625 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNF; Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OR ASTMA276-79A ASSN STD SINGLE MATERIAL RESPONSE OVERALL A. 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.