The Packing Nut, cataloged under National Stock Number 4730-00-007-5590, 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 Northrop Grumman Systems Corporation. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-00-007-5590 |
| Primary Part Number | A51M60662-11 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Length to Shoulder | 0.233 INCHES NOMINAL IN |
| Width Across Flats | 0.625 INCHES NOMINAL IN |
| Largest Inside Diameter | 0.475 INCHES MINIMUM AND 0.485 INCHES MAXIMUM IN |
| Thread Length | 0.233 INCHES NOMINAL IN |
| Style Designator | HEXAGON, INTERNAL THREAD, SHOULDERED |
| Thread Pitch Diameters | +0.4484 TO 0.4517 INCHES IN |
| Smallest Outside Diameter | 0.500 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 0.469-32 |
| Screw Thread Series Designator | NS-2 |
| Surface Treatment | CADMIUM |
| Major Unthreaded Outside Diameter | 0.625 INCHES NOMINAL IN |
| Screw Thread Location | INTERNAL |
| Material | STEEL COMP 4340 |
| Smallest Inside Diameter | 0.311 INCHES MINIMUM AND 0.318 INCHES MAXIMUM 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 |
|---|---|
| A51M60662-11 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| A51M60662-11 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| A51M60662-11 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 4730-00-007-5590 is a Packing Nut, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-007-5590 has 1 manufacturer part number on file: A51M60662-11 (Northrop Grumman Systems Corporation).
Key specifications for A51M60662-11: Length to Shoulder: 0.233 INCHES NOMINAL IN; Width Across Flats: 0.625 INCHES NOMINAL IN; Largest Inside Diameter: 0.475 INCHES MINIMUM AND 0.485 INCHES MAXIMUM IN; Thread Length: 0.233 INCHES NOMINAL IN. 16 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.