The Nut,tube Coupling, cataloged under National Stock Number 4730-01-583-8951, 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 17 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-583-8951 |
| Primary Part Number | AS5175W12 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Length to Shoulder | 0.125 INCHES NOMINAL IN |
| Width Across Flats | 1.238 INCHES MINIMUM AND 1.253 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL JOINT (UNJ) |
| Material Document and Classification | AMS-QQ-A-225/9 ASSN STD 1ST MATERIAL RESPONSE OR AMS 4124 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Seat Angle | 15.0 DEGREES NOMINAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.062 INCHES IN |
| Nut Height | 1.031 INCHES MAXIMUM IN |
| Drilled Hole Diameter | 0.125 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE OVERALL |
| Nut Style | TUBE COUPLING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | ALUMINUM ALLOY 7075 OVERALL |
| Smallest Inside Diameter | 0.834 INCHES NOMINAL IN |
| Nominal Tube Outside Diameter | 0.750 INCHES IN |
| Hole Type and Quantity | 2 DRILLED |
| 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 |
|---|---|
| AS5175W12 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AS5175W12 | 5/9 Secondary reference U.S. Government activity |
| AS5175 | 3/1 Design control — primary reference Sae International Dba Sae International |
| AS4841 | 5/9 Secondary reference U.S. Government activity |
| AS4841 | 3/1 Design control — primary reference Sae International Dba Sae International |
| AS5175 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-583-8951 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 4730-01-583-8951 has 1 manufacturer part number on file: AS5175W12 (Sae International Dba Sae International).
4 possible matches (shared part number, not a government interchangeability claim): 4730-01-631-7907, 4730-01-689-8422, 4730-01-723-2900. Verify interchangeability with system specifications before substitution.
Key specifications for AS5175W12: Length to Shoulder: 0.125 INCHES NOMINAL IN; Width Across Flats: 1.238 INCHES MINIMUM AND 1.253 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL JOINT (UNJ); Material Document and Classification: AMS-QQ-A-225/9 ASSN STD 1ST MATERIAL RESPONSE OR AMS 4124 ASSN STD 2ND MATERIAL RESPONSE OVERALL. 17 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.