The Packing Nut, cataloged under National Stock Number 4730-00-448-6808, 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 Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 13 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-448-6808 |
| Primary Part Number | 49959 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. |
| Status | ACTIVE |
| Thread Length | 0.380 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Screw Thread Location | EXTERNAL |
| Width Across Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Smallest Inside Diameter | 0.264 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN |
| Material | STEEL COMP 8740 |
| Surface Treatment | CADMIUM |
| Surface Treatment Document and Classification | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE |
| Style Designator | HEXAGON, EXTERNAL THREAD, BOSS |
| Thread Direction | RIGHT-HAND |
| Screw Thread Series Designator | UNF |
| Thread Size | 7/16IN-20 IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4730-00-448-6808 is a Packing Nut, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-00-448-6808 has 2 cross-referenced part numbers: 49959 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.), 49959 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
There are 2 known substitutes for 4730-00-448-6808: 5365-01-225-6929, 5930-01-338-5429. Verify interchangeability with system specifications before substitution.
Key specifications for 49959: Thread Length: 0.380 INCHES NOMINAL IN; Thread Class: 3A A; Special Features: ONE 0.062 IN.DIA HOLE DRILLED THRU CORNER OF HEX IN; Screw Thread Location: EXTERNAL. 15 total characteristics are documented in the Federal Logistics Information System.