The Packing Nut, cataloged under National Stock Number 4730-01-280-5088, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-280-5088 |
| Primary Part Number | 755750 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Width Across Flats | 0.617 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Seat Angle in Deg | 60.0 |
| Thread Length | 0.438 INCHES NOMINAL IN |
| Style Designator | HEXAGON, EXTERNAL THREAD, INVERTED FLARE |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 5/8-18 |
| Screw Thread Series Designator | UNF |
| Thread Class | 2A A |
| Screw Thread Location | EXTERNAL |
| Material | COPPER ALLOY |
| Smallest Inside Diameter | 0.250 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 |
|---|---|
| 755750 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 4730-01-280-5088 is a Packing Nut, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-280-5088 has 1 manufacturer part number on file: 755750 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 755750: Width Across Flats: 0.617 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN; Seat Angle in Deg: 60.0; Thread Length: 0.438 INCHES NOMINAL IN; Style Designator: HEXAGON, EXTERNAL THREAD, INVERTED FLARE. 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.