The Packing Nut, cataloged under National Stock Number 4730-01-057-7392, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-057-7392 |
| Primary Part Number | 1385602PC11-3IN |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Width Across Flats | 2.125 INCHES NOMINAL IN |
| Thread Length | 0.672 INCHES NOMINAL IN |
| Style Designator | HEXAGON, EXTERNAL THREAD, BOSS |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 1.938-12 |
| Screw Thread Series Designator | UN |
| Thread Class | 3A A |
| Screw Thread Location | EXTERNAL |
| Material | COPPER ALLOY 922 |
| Smallest Inside Diameter | 1.368 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 |
| Part Number | Manufacturer |
|---|---|
| 1385602PC11-3IN PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 803-2177917-03X | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 803-2177917-3-1 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4730-01-057-7392 is a Packing Nut, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-057-7392 has 1 manufacturer part number on file: 1385602PC11-3IN (Naval Sea Systems Command).
Key specifications for 1385602PC11-3IN: Width Across Flats: 2.125 INCHES NOMINAL IN; Thread Length: 0.672 INCHES NOMINAL IN; Style Designator: HEXAGON, EXTERNAL THREAD, BOSS; Overall Length: 0.922 INCHES NOMINAL IN. 11 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.