The Packing Nut, cataloged under National Stock Number 4730-00-139-4524, 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 Hydranamics Inc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 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 | 4730-00-139-4524 |
| Primary Part Number | H929-6A |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Hydranamics Inc |
| Status | ACTIVE |
| Major Unthreaded Outside Diameter | 3.125 INCHES NOMINAL IN |
| Width Across Flats | 2.875 INCHES NOMINAL IN |
| Smallest Inside Diameter | 2.503 INCHES MINIMUM AND 2.505 INCHES MAXIMUM IN |
| Material | COPPER ALLOY |
| Thread Class | 2A A |
| Largest Inside Diameter | 2.810 INCHES MINIMUM AND 2.815 INCHES MAXIMUM IN |
| Thread Length | 0.859 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 3-1/4-12 |
| Screw Thread Series Designator | UNF |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4730-00-139-4524 is a Packing Nut, manufactured by Hydranamics Inc, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-00-139-4524 has 2 cross-referenced part numbers: H929-6A (Hydranamics Inc), 20175 (Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.).
There are 5 known substitutes for 4730-00-139-4524: 1720-00-300-3329, 6610-00-346-3663, 5961-00-880-5168 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for H929-6A: Major Unthreaded Outside Diameter: 3.125 INCHES NOMINAL IN; Width Across Flats: 2.875 INCHES NOMINAL IN; Smallest Inside Diameter: 2.503 INCHES MINIMUM AND 2.505 INCHES MAXIMUM IN; Material: COPPER ALLOY. 11 total characteristics are documented in the Federal Logistics Information System.