The Nut,tube Coupling, cataloged under National Stock Number 4730-00-951-2382, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-951-2382 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Length to Shoulder | 0.625 INCHES NOMINAL IN |
| Width Across Flats | 0.687 INCHES NOMINAL IN |
| Thread Series | UNF |
| Hole Configuration Style | CONFIGURATION C |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.562 INCHES IN |
| Specification/standard Data | 96906-MS51531 GOVERNMENT STANDARD |
| Nut Height | 0.687 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | TUBE COUPLING |
| Thread Class | 2B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Fabrication Method | MACHINED |
| Smallest Inside Diameter | 0.437 INCHES NOMINAL IN |
| Nominal Tube Outside Diameter | 0.375 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 |
| Reference | Meaning |
|---|---|
| 6BTX-SS | 5/1 Secondary reference Parker Hannifin (uk) Ltd |
| 46TX-SS | 5/1 Secondary reference Parker Hannifin (uk) Ltd |
| 6-070110S | 5/1 Secondary reference Sae International Dba Sae International |
| 6BTXSS | 5/9 Secondary reference U.S. Government activity |
| 2755178-15 | C/1 Advisory reference — outside the item-of-supply concept Honeywell International Inc Div Aerospace-South Bend (bendix Dr) |
| 6BTXSS | 5/1 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| AA67032-6K | 5/1 Secondary reference Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply |
| MIL-DTL-18866 | 4/1 Identification reference U.S. Government activity |
| MIL-F-18866 | 5/9 Secondary reference U.S. Government activity |
| 2753116-6 | 5/1 Secondary reference Honeywell International Inc Div Aerospace-South Bend (bendix Dr) |
| MS51531B6S | 2/2 Government specification standardization U.S. Government activity |
| 6-070110S | 5/9 Secondary reference U.S. Government activity |
NSN 4730-00-951-2382 is a Nut,tube Coupling, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6150-01-574-4090. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-00-951-2382: Length to Shoulder: 0.625 INCHES NOMINAL IN; Width Across Flats: 0.687 INCHES NOMINAL IN; Thread Series: UNF; Hole Configuration Style: CONFIGURATION C. 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.