The Nut Assembly,tube Coupling, cataloged under National Stock Number 4730-01-418-8944, 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 10 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-418-8944 |
| Item Name | Nut Assembly,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Tube Outside Diameter for Which Designed | 3.000 INCHES NOMINAL IN |
| Style Designator | NUT ASSEMBLY |
| Outside Diameter | 3.840 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Thread Size | 3-1/2-16 |
| Screw Thread Series Designator | UN |
| Surface Treatment | ANODIZE |
| Thread Class | 2B |
| Material | ALUMINUM ALLOY 2024 |
| Working Pressure and Service Type | 125.0 POUNDS PER SQUARE INCH (PSI) NOMINAL JET FUEL AND 125.0 POUNDS PER SQUARE INCH (PSI) NOMINAL AIR LBS |
| 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 |
|---|---|
| NA30130AR | C/1 Advisory reference — outside the item-of-supply concept Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| 7D0261R48 | 3/2 Design control — primary reference U.S. Government activity |
| NA30130AR | 5/9 Secondary reference Eaton Aviation Corporation |
| 7D0261 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-418-8944 is a Nut Assembly,tube Coupling, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-419-1872. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-418-8944: Tube Outside Diameter for Which Designed: 3.000 INCHES NOMINAL IN; Style Designator: NUT ASSEMBLY; Overall Length: 0.700 INCHES NOMINAL IN; Outside Diameter: 3.840 INCHES NOMINAL IN. 10 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.