The Nut,tube Coupling, cataloged under National Stock Number 4730-01-329-1122, 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 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-329-1122 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Length to Shoulder | 0.704 INCHES MINIMUM AND 0.724 INCHES MAXIMUM IN |
| Width Across Flats | 0.871 INCHES MINIMUM AND 0.878 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-S-5002 MIL SPEC 1ST TREATMENT RESPONSE AND QQ-P-35,TY1 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Configuration Style | CONFIGURATION B |
| Material Document and Classification | 66,AISI 316/SAE 30316 FED STD 1ST MATERIAL RESPONSE OR 66,AISI 304/SAE 30304 FED STD 2ND MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.750 INCHES IN |
| Nut Height | 0.833 INCHES MINIMUM AND 0.853 INCHES MAXIMUM IN |
| Drilled Hole Diameter | 0.096 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | TUBE COUPLING |
| Thread Class | 3B |
| Material | STEEL COMP 316 OR STEEL COMP 304 OVERALL |
| Fabrication Method | FORGED OR MACHINED |
| Smallest Inside Diameter | 0.689 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN |
| Nominal Tube Outside Diameter | 0.750 INCHES IN |
| Hole Type and Quantity | 1 DRILLED |
| 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 |
|---|---|
| MS27073-8C | 2/2 Government specification standardization U.S. Government activity |
NSN 4730-01-329-1122 is a Nut,tube Coupling, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-329-1122: Length to Shoulder: 0.704 INCHES MINIMUM AND 0.724 INCHES MAXIMUM IN; Width Across Flats: 0.871 INCHES MINIMUM AND 0.878 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-S-5002 MIL SPEC 1ST TREATMENT RESPONSE AND QQ-P-35,TY1 FED SPEC 2ND TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF). 18 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.