The Packing Nut, cataloged under National Stock Number 4730-00-640-1368, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Siemens Energy, Inc.. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-640-1368 |
| Primary Part Number | G8426PC284 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Siemens Energy, Inc. |
| Status | ACTIVE |
| Hole or Slot Quantity | 2 |
| Thread Length | 1.375 INCHES NOMINAL IN |
| Style Designator | ROUND, INTERNAL THREAD, SHOULDERED |
| Smallest Outside Diameter | 1.998 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 1-1/2 IN.-12 IN |
| Screw Thread Series Designator | UNF |
| Thread Class | 3B |
| Major Unthreaded Outside Diameter | 1.998 INCHES NOMINAL IN |
| Screw Thread Location | INTERNAL |
| Material | STEEL |
| Smallest Inside Diameter | 1.500 INCHES NOMINAL IN |
| Hole Diameter | 0.313 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| G8426PC284 PRIMARY | Siemens Energy, Inc. (USA) |
| G10248PC283 PRIMARY | Siemens Energy, Inc. (USA) |
| G17009PC255 PRIMARY | Siemens Energy, Inc. (USA) |
| I402V PRIMARY | Siemens Energy, Inc. (USA) |
| G8661PC283 PRIMARY | Siemens Energy, Inc. (USA) |
| G16836PC255 PRIMARY | Siemens Energy, Inc. (USA) |
| G9002PC284 PRIMARY | Siemens Energy, Inc. (USA) |
| G10228PC283 PRIMARY | Siemens Energy, Inc. (USA) |
| G9004PC283 PRIMARY | Siemens Energy, Inc. (USA) |
NSN 4730-00-640-1368 is a Packing Nut, manufactured by Siemens Energy, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-640-1368 has 9 manufacturer part numbers on file: G8426PC284 (Siemens Energy, Inc.), G10248PC283 (Siemens Energy, Inc.), G17009PC255 (Siemens Energy, Inc.), I402V (Siemens Energy, Inc.), G8661PC283 (Siemens Energy, Inc.) and 4 more.
Key specifications for G8426PC284: Hole or Slot Quantity: 2; Thread Length: 1.375 INCHES NOMINAL IN; Style Designator: ROUND, INTERNAL THREAD, SHOULDERED; Overall Length: 2.625 INCHES NOMINAL IN. 14 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.