The Packing Nut, cataloged under National Stock Number 4730-01-504-5320, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Naval Sea Systems Command. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-504-5320 |
| Primary Part Number | 563-7286781-31 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Material | COPPER ALLOY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| H6841505A-31 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| H684-1505 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 563-7286781-31 PRIMARY | Naval Sea Systems Command (USA) |
| 563-7286781 | Naval Sea Systems Command (USA) |
| H684-1505-31 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
NSN 4730-01-504-5320 is a Packing Nut, manufactured by Naval Sea Systems Command, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-01-504-5320 has 5 cross-referenced part numbers: H6841505A-31 (Electric Boat Corporation Div General Dynamics Electric Boat), H684-1505 (Electric Boat Corporation Div General Dynamics Electric Boat), 563-7286781-31 (Naval Sea Systems Command), 563-7286781 (Naval Sea Systems Command), H684-1505-31 (Electric Boat Corporation Div General Dynamics Electric Boat).
There are 5 known substitutes for 4730-01-504-5320: 3040-01-504-6303, 3120-01-504-6874, 4820-01-504-7557 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 563-7286781-31: Special Features: ADJUSTS CONNECTING TUBE TO VALVE; COPPER ALLOY 623; Part Name Assigned by Controlling Agency: SEAL ADJUSTING; Material: COPPER ALLOY; End Item Identification: SHIP. 4 total characteristics are documented in the Federal Logistics Information System.