The Nut,tube Coupling, cataloged under National Stock Number 4730-00-203-3433, 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 Rolls-Royce Solutions America Inc. 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-203-3433 |
| Primary Part Number | 8925092 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Rolls-Royce Solutions America Inc |
| Status | ACTIVE |
| Length to Shoulder | 0.516 INCHES NOMINAL IN |
| Width Across Flats | 0.688 INCHES NOMINAL IN |
| Thread Series | UNS |
| Thread Pitch Diameters | +0.5925 TO 0.5966 INCHES IN |
| Seat Angle | 30.00 DEGREES NOMINAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.625 INCHES IN |
| Nut Height | 0.641 INCHES NOMINAL IN |
| Nut Style | TUBE COUPLING |
| Thread Quantity Per Inch | 20 |
| Material | COPPER ALLOY OVERALL |
| Fabrication Method | MACHINED |
| Smallest Inside Diameter | 0.324 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN |
| Nominal Tube Outside Diameter | 0.312 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 |
|---|---|
| 8925092 PRIMARY | Rolls-Royce Solutions America Inc (USA) |
| Reference | Meaning |
|---|---|
| 5177490 | 5/9 Secondary reference General Motors Corp |
| 5138304 | 5/9 Secondary reference Rolls-Royce Solutions America Inc |
| 5177490 | 5/9 Secondary reference Rolls-Royce Solutions America Inc |
| 300-5B | 5/9 Secondary reference Chicago Fittings |
| PC5138304 | 5/9 Secondary reference Power Components (deutschland) Gmbh |
NSN 4730-00-203-3433 is a Nut,tube Coupling, manufactured by Rolls-Royce Solutions America Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-203-3433 has 1 manufacturer part number on file: 8925092 (Rolls-Royce Solutions America Inc).
1 possible match (shared part number, not a government interchangeability claim): 4730-00-936-8718. Verify interchangeability with system specifications before substitution.
Key specifications for 8925092: Length to Shoulder: 0.516 INCHES NOMINAL IN; Width Across Flats: 0.688 INCHES NOMINAL IN; Thread Series: UNS; Thread Pitch Diameters: +0.5925 TO 0.5966 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.