The Nut,tube Coupling, cataloged under National Stock Number 4730-01-243-3405, 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 Komatsu America Corp.. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-243-3405 |
| Primary Part Number | 9403486 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Komatsu America Corp. |
| Status | ACTIVE |
| Length to Shoulder | 0.370 INCHES NOMINAL IN |
| Width Across Flats | 0.562 INCHES NOMINAL IN |
| Thread Series | UNF |
| Seat Angle | 33.0 DEGREES NOMINAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Nut Height | 1.000 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Nut Style | TUBE COUPLING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Smallest Inside Diameter | 0.255 INCHES NOMINAL IN |
| Nominal Tube Outside Diameter | 0.250 INCHES 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 |
|---|---|
| 9403486 | Komatsu America Corp. (USA) |
| 9403486 | General Motors Llc Dba General Motors Llc (USA) |
| Reference | Meaning |
|---|---|
| 9403486 | 3/9 Design control — primary reference Komatsu American Intl Co |
| 9403486 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
NSN 4730-01-243-3405 is a Nut,tube Coupling, manufactured by Komatsu America Corp., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-243-3405 has 2 manufacturer part numbers on file: 9403486 (Komatsu America Corp.), 9403486 (General Motors Llc Dba General Motors Llc).
Key specifications for 9403486: Length to Shoulder: 0.370 INCHES NOMINAL IN; Width Across Flats: 0.562 INCHES NOMINAL IN; Thread Series: UNF; Seat Angle: 33.0 DEGREES NOMINAL. 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.