The Packing Nut, cataloged under National Stock Number 4730-01-067-9923, 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 William Powell Company, the Dba Powell Valve Div the Starflo Corporation. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-067-9923 |
| Primary Part Number | 2620-925X4PC16ASSYA1-2IN |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | William Powell Company, the Dba Powell Valve Div the Starflo Corporation |
| Status | ACTIVE |
| Length to Shoulder | 0.375 INCHES NOMINAL IN |
| Width Across Flats | 0.938 INCHES NOMINAL IN |
| Thread Length | 0.375 INCHES NOMINAL IN |
| Style Designator | HEXAGON, INTERNAL THREAD, SHOULDERED |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 0.750-20 |
| Screw Thread Series Designator | UNEF |
| Thread Class | 2B |
| Major Unthreaded Outside Diameter | 0.938 INCHES NOMINAL IN |
| Screw Thread Location | INTERNAL |
| Material | NICKEL ALLOY |
| Smallest Inside Diameter | 0.562 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 |
|---|---|
| 2620-925X4PC16ASSYA1-2IN PRIMARY | William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA) |
| 845-2181284PC16ASSYA1-2IN PRIMARY | William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA) |
| 845-2181284PC16ASSYA1-2IN PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| SS845-2181284 | D/9 Drawing number reference only Naval Sea Systems Command |
| 2620-925X4PC16ASSYA1-2IN | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-067-9923 is a Packing Nut, manufactured by William Powell Company, the Dba Powell Valve Div the Starflo Corporation, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-067-9923 has 3 manufacturer part numbers on file: 2620-925X4PC16ASSYA1-2IN (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), 845-2181284PC16ASSYA1-2IN (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), 845-2181284PC16ASSYA1-2IN (Naval Sea Systems Command).
Key specifications for 2620-925X4PC16ASSYA1-2IN: Length to Shoulder: 0.375 INCHES NOMINAL IN; Width Across Flats: 0.938 INCHES NOMINAL IN; Thread Length: 0.375 INCHES NOMINAL IN; Style Designator: HEXAGON, INTERNAL THREAD, SHOULDERED. 13 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.