The Packing Nut, cataloged under National Stock Number 4730-00-890-7944, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-890-7944 |
| Primary Part Number | 1525-48A |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Goodrich Corporation |
| Status | ACTIVE |
| Length to Shoulder | 0.690 INCHES NOMINAL IN |
| Seat Angle in Deg | 45.0 |
| Hole or Slot Quantity | 6 |
| Largest Inside Diameter | 2.812 INCHES NOMINAL IN |
| Thread Length | 0.500 INCHES NOMINAL IN |
| Style Designator | ROUND, EXTERNAL THREAD, INVERTED FLARE |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 3.500-16 |
| Screw Thread Series Designator | UN |
| Thread Class | 2A A |
| Major Unthreaded Outside Diameter | 4.125 INCHES NOMINAL IN |
| Screw Thread Location | EXTERNAL |
| Material | ALUMINUM ALLOY |
| Slot Width | 0.438 INCHES NOMINAL IN |
| Smallest Inside Diameter | 2.520 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 |
|---|---|
| 1525-48A PRIMARY | Goodrich Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1525-48A | 3/9 Design control — primary reference Goodrich Corporation Div Advanced Structures Landing Systems |
NSN 4730-00-890-7944 is a Packing Nut, manufactured by Goodrich Corporation, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-890-7944 has 1 manufacturer part number on file: 1525-48A (Goodrich Corporation).
Key specifications for 1525-48A: Length to Shoulder: 0.690 INCHES NOMINAL IN; Seat Angle in Deg: 45.0; Hole or Slot Quantity: 6; Largest Inside Diameter: 2.812 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.