The Packing Nut, cataloged under National Stock Number 4730-01-545-8453, 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 9 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-545-8453 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Width Across Flats | 1.250 INCHES NOMINAL IN |
| Style Designator | IRREGULAR |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 1/4-12 |
| Screw Thread Series Designator | UNF |
| Screw Thread Location | EXTERNAL |
| Material | COPPER ALLOY 360 |
| Smallest Inside Diameter | 0.718 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 |
|---|---|
| SK5153-N TABLE II | 5/9 Secondary reference Henry Technologies, Inc. |
| M840-7B | 5/9 Secondary reference Henry Technologies, Inc. |
| SK5153-N | D/9 Drawing number reference only Henry Technologies, Inc. |
| 6-067-017 | 3/9 Design control — primary reference Henry Technologies, Inc. |
NSN 4730-01-545-8453 is a Packing Nut, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-545-8453: Width Across Flats: 1.250 INCHES NOMINAL IN; Style Designator: IRREGULAR; Overall Length: 1.000 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND. 9 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.