The Packing Nut, cataloged under National Stock Number 4730-00-922-1379, 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 15 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-922-1379 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Length to Shoulder | 0.625 INCHES NOMINAL IN |
| Width Across Flats | 0.625 INCHES NOMINAL IN |
| Material Hardness Rating | 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM |
| Largest Inside Diameter | 0.562 INCHES NOMINAL IN |
| Thread Length | 0.281 INCHES NOMINAL IN |
| Style Designator | HEXAGON, EXTERNAL THREAD, INTERNAL SHOUL DER |
| Thread Direction | LEFT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 1-1/16 IN-18 IN |
| Screw Thread Series Designator | UNEF |
| Thread Class | 3A A |
| Major Unthreaded Outside Diameter | 0.922 INCHES NOMINAL IN |
| Screw Thread Location | EXTERNAL |
| Material | STEEL COMP 630 |
| Smallest Inside Diameter | 0.312 INCHES NOMINAL 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 |
|---|---|
| A51H20570-11 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| A51H20570-11 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| A51H20570-11 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
NSN 4730-00-922-1379 is a Packing Nut, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-922-1379: Length to Shoulder: 0.625 INCHES NOMINAL IN; Width Across Flats: 0.625 INCHES NOMINAL IN; Material Hardness Rating: 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM; Largest Inside Diameter: 0.562 INCHES NOMINAL IN. 15 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.