The Packing Nut, cataloged under National Stock Number 4730-00-394-8505, 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 Todd Combustion Inc. Government technical data includes 13 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-394-8505 |
| Primary Part Number | F2-1-1 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Todd Combustion Inc |
| Status | ACTIVE |
| Slot Width | 0.172 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Major Unthreaded Outside Diameter | 0.875 INCHES NOMINAL IN |
| Smallest Inside Diameter | 0.641 INCHES NOMINAL IN |
| Style Designator | ROUND SLOTTED, EXTERNAL THREAD, BOSS |
| Screw Thread Location | EXTERNAL |
| Material | COPPER ALLOY |
| Screw Thread Series Designator | UN |
| Thread Length | 0.625 INCHES NOMINAL IN |
| Hole or Slot Quantity | 1 |
| Thread Class | 2A A |
| Thread Size | 0.875-12 |
| Thread Direction | RIGHT-HAND |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4730-00-394-8505 is a Packing Nut, manufactured by Todd Combustion Inc, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-00-394-8505 has 3 cross-referenced part numbers: F2-1-1 (Todd Shipyards Corp), 50171PC70 (Todd Shipyards Corp), F2-1-1 (Todd Combustion Inc).
There are 4 known substitutes for 4730-00-394-8505: 4930-00-298-8940, 5330-00-712-0129, 5950-00-839-5711 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for F2-1-1: Slot Width: 0.172 INCHES NOMINAL IN; Casehardening Indicator: NOT CASEHARDENED; Major Unthreaded Outside Diameter: 0.875 INCHES NOMINAL IN; Smallest Inside Diameter: 0.641 INCHES NOMINAL IN. 14 total characteristics are documented in the Federal Logistics Information System.