The Nut,tube Coupling, cataloged under National Stock Number 4730-01-178-6464, 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 Sae International Dba Sae International. Government technical data includes 15 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-178-6464 |
| Primary Part Number | AS5203J08 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Width Across Flats | 0.875 INCHES NOMINAL IN |
| Thread Series | UNF |
| Seat Angle | 33.0 DEGREES NOMINAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.750 INCHES IN |
| Specification/standard Data | 88044-AN817 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Nut Height | 1.281 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | TUBE COUPLING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP 304 OVERALL |
| Fabrication Method | MACHINED |
| Smallest Inside Diameter | 0.505 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN |
| Nominal Tube Outside Diameter | 0.500 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 |
|---|---|
| AS5203J08 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AS4841 | 3/1 Design control — primary reference Sae International Dba Sae International |
| AS4841 | 5/9 Secondary reference U.S. Government activity |
| AN817-8J | 5/9 Secondary reference U.S. Government activity |
| AS5203J08 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-178-6464 is a Nut,tube Coupling, manufactured by Sae International Dba Sae International, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-178-6464 has 1 manufacturer part number on file: AS5203J08 (Sae International Dba Sae International).
Key specifications for AS5203J08: Width Across Flats: 0.875 INCHES NOMINAL IN; Thread Series: UNF; Seat Angle: 33.0 DEGREES NOMINAL; Thread Direction: RIGHT-HAND. 15 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.