The Packing Nut, cataloged under National Stock Number 4730-00-524-8490, 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 Northrop Grumman Systems Corporation. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-524-8490 |
| Primary Part Number | G429-27 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Thread Size | 2.250-16 |
| Casehardening Indicator | NOT CASEHARDENED |
| Screw Thread Series Designator | UN |
| Smallest Inside Diameter | 1.700 INCHES NOMINAL IN |
| Screw Thread Location | INTERNAL |
| Length to Shoulder | 0.514 INCHES NOMINAL IN |
| Width Across Flats | 2.437 INCHES NOMINAL IN |
| Major Unthreaded Outside Diameter | 2.437 INCHES NOMINAL IN |
| Material | STEEL |
| Surface Treatment | CADMIUM |
| Style Designator | HEXAGON, INTERNAL THREAD, SHOULDERED |
| Thread Class | 2B |
| Thread Direction | RIGHT-HAND |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4730-00-524-8490 is a Packing Nut, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-00-524-8490 has 2 cross-referenced part numbers: G429 (Northrop Grumman Systems Corporation), G429-27 (Northrop Grumman Systems Corporation).
There are 6 known substitutes for 4730-00-524-8490: 3110-00-142-4349, 4030-00-243-4439, 4030-00-634-8589 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for G429-27: Overall Length: 0.625 INCHES NOMINAL IN; Thread Size: 2.250-16; Casehardening Indicator: NOT CASEHARDENED; Screw Thread Series Designator: UN. 14 total characteristics are documented in the Federal Logistics Information System.