The Packing Nut, cataloged under National Stock Number 4730-00-349-6575, 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 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-349-6575 |
| Primary Part Number | G8175PC25 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Siemens Energy, Inc. |
| Status | ACTIVE |
| Length to Shoulder | 0.500 INCHES NOMINAL IN |
| Hole or Slot Quantity | 2 |
| Thread Length | 0.312 INCHES NOMINAL IN |
| Style Designator | KNURLED, INTERNAL THREAD, SHOULDERED |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 1-1/4 IN-14 IN |
| Screw Thread Series Designator | UNS |
| Thread Class | 2B |
| Major Unthreaded Outside Diameter | 1.405 INCHES MINIMUM AND 1.406 INCHES MAXIMUM IN |
| Screw Thread Location | INTERNAL |
| Material | NICKEL ALLOY |
| Smallest Inside Diameter | 1.031 INCHES MINIMUM AND 1.033 INCHES MAXIMUM IN |
| Hole Diameter | 0.234 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 |
|---|---|
| G8175PC25 PRIMARY | Siemens Energy, Inc. (USA) |
| G8800PC26 PRIMARY | Siemens Energy, Inc. (USA) |
| G7255PC23 PRIMARY | Siemens Energy, Inc. (USA) |
| G7253PC23 PRIMARY | Siemens Energy, Inc. (USA) |
| G8802PC26 PRIMARY | Siemens Energy, Inc. (USA) |
| H587A PRIMARY | Siemens Energy, Inc. (USA) |
| G8177PC25 PRIMARY | Siemens Energy, Inc. (USA) |
NSN 4730-00-349-6575 is a Packing Nut, manufactured by Siemens Energy, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-349-6575 has 7 manufacturer part numbers on file: G8175PC25 (Siemens Energy, Inc.), G8800PC26 (Siemens Energy, Inc.), G7255PC23 (Siemens Energy, Inc.), G7253PC23 (Siemens Energy, Inc.), G8802PC26 (Siemens Energy, Inc.) and 2 more.
Key specifications for G8175PC25: Length to Shoulder: 0.500 INCHES NOMINAL IN; Hole or Slot Quantity: 2; Thread Length: 0.312 INCHES NOMINAL IN; Style Designator: KNURLED, INTERNAL THREAD, SHOULDERED. 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.