The Packing Nut, cataloged under National Stock Number 4730-01-133-8079, 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 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-133-8079 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Length to Shoulder | 1.188 INCHES MINIMUM AND 1.219 INCHES MAXIMUM IN |
| Width Across Flats | 2.562 INCHES NOMINAL IN |
| Thread Length | 1.033 INCHES NOMINAL IN |
| Style Designator | HEXAGON, INTERNAL THREAD, SHOULDERED |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 2-12 |
| Screw Thread Series Designator | UN |
| Thread Class | 3B |
| Screw Thread Location | INTERNAL |
| Material | COPPER ALLOY 922 OR COPPER ALLOY 836 |
| Smallest Inside Diameter | 0.875 INCHES MINIMUM AND 0.906 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 |
|---|---|
| 803-1385541 | D/9 Drawing number reference only U.S. Government activity |
| 803-1385541-042-20 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-133-8079 is a Packing Nut, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-133-8079: Length to Shoulder: 1.188 INCHES MINIMUM AND 1.219 INCHES MAXIMUM IN; Width Across Flats: 2.562 INCHES NOMINAL IN; Thread Length: 1.033 INCHES NOMINAL IN; Style Designator: HEXAGON, INTERNAL THREAD, SHOULDERED. 12 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.