The Packing Nut, cataloged under National Stock Number 4730-00-331-3560, 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 Goodrich Corporation. Government technical data includes 14 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-331-3560 |
| Primary Part Number | 2578532-001B |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Goodrich Corporation |
| Status | ACTIVE |
| Length to Shoulder | 1.312 INCHES NOMINAL IN |
| Thread Length | 1.050 INCHES NOMINAL IN |
| Style Designator | KNURLED, INTERNAL THREAD, SHOULDERED |
| Thread Pitch Diameters | +6.4459 TO 6.4526 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 6.500-12 |
| Screw Thread Series Designator | UNJS |
| Surface Treatment | CADMIUM AND PAINT |
| Thread Class | 3B |
| Major Unthreaded Outside Diameter | 7.380 INCHES NOMINAL IN |
| Screw Thread Location | INTERNAL |
| Material | STEEL |
| Smallest Inside Diameter | 5.440 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 |
|---|---|
| 2578532-001B PRIMARY | Goodrich Corporation (USA) |
| Reference | Meaning |
|---|---|
| 2578532-001B | 3/9 Design control — primary reference Goodrich Corporation Div Advanced Structures Landing Systems |
| 2578532-001B | 5/9 Secondary reference Goodrich Corp Dba Goodrich Corp |
| 2578532 | D/9 Drawing number reference only Honeywell International Inc Div Aerospace-South Bend (bendix Dr) |
| 2578532-001B | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) |
| 2578532 | D/9 Drawing number reference only Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) |
NSN 4730-00-331-3560 is a Packing Nut, manufactured by Goodrich Corporation, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-331-3560 has 1 manufacturer part number on file: 2578532-001B (Goodrich Corporation).
Key specifications for 2578532-001B: Length to Shoulder: 1.312 INCHES NOMINAL IN; Thread Length: 1.050 INCHES NOMINAL IN; Style Designator: KNURLED, INTERNAL THREAD, SHOULDERED; Thread Pitch Diameters: +6.4459 TO 6.4526 INCHES 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.