The Packing Nut, cataloged under National Stock Number 4730-01-263-2955, 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 Ship Systems Command. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-263-2955 |
| Primary Part Number | 1889583 PIECE 15 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Naval Ship Systems Command |
| Status | ACTIVE |
| Material | COPPER ALLOY 360 |
| Style Designator | HEXAGON, INTERNAL THREAD, SHOULDERED |
| Screw Thread Location | INTERNAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 1889583 PIECE 15 PRIMARY | Naval Ship Systems Command (USA) |
| B270-5 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 2620-906 PIECE 15 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
NSN 4730-01-263-2955 is a Packing Nut, manufactured by Naval Ship Systems Command, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-01-263-2955 has 3 cross-referenced part numbers: 1889583 PIECE 15 (Naval Ship Systems Command), B270-5 (Electric Boat Corporation Div General Dynamics Electric Boat), 2620-906 PIECE 15 (Electric Boat Corporation Div General Dynamics Electric Boat).
There are 2 known substitutes for 4730-01-263-2955: 4730-00-095-4182, 5310-00-825-2498. Verify interchangeability with system specifications before substitution.
Key specifications for 1889583 PIECE 15: Material: COPPER ALLOY 360; Style Designator: HEXAGON, INTERNAL THREAD, SHOULDERED; Screw Thread Location: INTERNAL. 3 total characteristics are documented in the Federal Logistics Information System.