The Inverted Nut,tube Coupling, cataloged under National Stock Number 4730-00-798-8057, 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 General Electric Company. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-798-8057 |
| Primary Part Number | R310P16 |
| Item Name | Inverted Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Width Across Flats | 1.375 INCHES NOMINAL IN |
| Tube Outside Diameter for Which Designed | 0.625 INCHES NOMINAL IN |
| Style Designator | INVERTED NUT, TUBE, COMPRESSION |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 1.312-12 |
| Screw Thread Series Designator | UN |
| Thread Class | 2A A |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| R310P16 PRIMARY | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 4730PL0725802 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| R310P16 | 5/9 Secondary reference General Electric Company |
NSN 4730-00-798-8057 is a Inverted Nut,tube Coupling, manufactured by General Electric Company, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-798-8057 has 1 manufacturer part number on file: R310P16 (General Electric Company).
Key specifications for R310P16: Width Across Flats: 1.375 INCHES NOMINAL IN; Tube Outside Diameter for Which Designed: 0.625 INCHES NOMINAL IN; Style Designator: INVERTED NUT, TUBE, COMPRESSION; Overall Length: 1.281 INCHES NOMINAL IN. 9 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.