The Nut,tube Coupling, cataloged under National Stock Number 4730-00-800-8155, 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 18 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-800-8155 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Length to Shoulder | 0.677 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN |
| Width Across Flats | 1.250 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-P-16232,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UN |
| Seat Angle | 40.00 DEGREES NOMINAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.062 INCHES IN |
| Specification/standard Data | 96906-MS51823 GOVERNMENT STANDARD AND 81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Nondefinitive Spec/std Data | 31 FIGURE |
| Nut Height | 0.970 INCHES NOMINAL IN |
| Surface Treatment | PHOSPHATE OVERALL |
| Nut Style | TUBE COUPLING |
| Thread Class | 2B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 1015 OVERALL |
| Fabrication Method | MACHINED |
| Smallest Inside Diameter | 0.756 INCHES NOMINAL IN |
| Nominal Tube Outside Diameter | 0.750 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 |
|---|---|
| J514 | 5/1 Secondary reference Sae International Dba Sae International |
| MS51823-8P | 2/2 Government specification standardization U.S. Government activity |
| MIL-DTL-18866 | 4/1 Identification reference U.S. Government activity |
| J514 | 5/9 Secondary reference U.S. Government activity |
| 12 080110C-PHOS | 5/9 Secondary reference U.S. Government activity |
| 12 080110C-PHOS | 5/1 Secondary reference Sae International Dba Sae International |
| 4730PL0811311 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 4730-00-800-8155 is a Nut,tube Coupling, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-800-8155: Length to Shoulder: 0.677 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN; Width Across Flats: 1.250 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-P-16232,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UN. 18 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.