The Locknut,tube Fitting, cataloged under National Stock Number 4730-00-614-6478, 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 12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-614-6478 |
| Item Name | Locknut,tube Fitting |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Width Across Flats | 0.750 INCHES NOMINAL IN |
| Packing Recess Diameter | 0.505 INCHES NOMINAL IN |
| Thread Series | UNF |
| Thread Pitch Diameters | +0.4643 TO 0.4675 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.500 INCHES IN |
| Specification/standard Data | 96906-MS51860 GOVERNMENT STANDARD |
| Nut Height | 0.250 INCHES NOMINAL IN |
| Nut Style | TUBE FITTING LOCKNUT |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Nominal Tube Outside Diameter | 0.313 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 |
|---|---|
| MIL-DTL-18866 | 4/1 Identification reference U.S. Government activity |
| MS39321V5 | 5/9 Secondary reference U.S. Government activity |
| MS51860-54SS | 2/2 Government specification standardization U.S. Government activity |
NSN 4730-00-614-6478 is a Locknut,tube Fitting, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-614-6478: Width Across Flats: 0.750 INCHES NOMINAL IN; Packing Recess Diameter: 0.505 INCHES NOMINAL IN; Thread Series: UNF; Thread Pitch Diameters: +0.4643 TO 0.4675 INCHES IN. 12 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.