The Packing Nut, cataloged under National Stock Number 4730-01-142-8183, 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 Curtiss-Wright Electro-Mechanical Corporation Div Epd. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Packing Nut |
| FSC / FSG | 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings (FSG 47) |
| Manufacturers | Curtiss-Wright Electro-Mechanical Corporation Div Epd (CAGE 0UBG9) |
| Parameter | Value |
|---|---|
| NSN | 4730-01-142-8183 |
| Primary Part Number | 973745-02 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| 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 |
|---|---|
| RY-173745RH | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 973745-02 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| RY-173745 | D/9 Drawing number reference only U.S. Government activity |
| 973745-00PH | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 973745-02 | 3/9 Design control — primary reference U.S. Government activity |
| RY-173745RH | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-142-8183 is a Packing Nut, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-142-8183 has 2 manufacturer part numbers on file: RY-173745RH (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 973745-02 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-145-4855. Verify interchangeability with system specifications before substitution.
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.