The Nut,tube Coupling, cataloged under National Stock Number 4730-00-433-3226, 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 Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-00-433-3226 |
| Primary Part Number | 140-25-12D |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| Status | ACTIVE |
| Width Across Flats | 1.750 INCHES NOMINAL IN |
| Thread Series | UN |
| Material Document and Classification | QQ-A-225/5,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.625 INCHES IN |
| Nut Height | 0.912 INCHES MINIMUM AND 0.932 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE OVERALL |
| Nut Style | TUBE COUPLING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | ALUMINUM ALLOY 2017 OVERALL |
| Fabrication Method | MACHINED |
| Smallest Inside Diameter | 1.380 INCHES MINIMUM AND 1.385 INCHES MAXIMUM 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 |
| Part Number | Manufacturer |
|---|---|
| 140-25-12D PRIMARY | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| Reference | Meaning |
|---|---|
| 140-25-12 | 5/9 Secondary reference Raytheon Company |
| AN6224-12 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-00-433-3226 is a Nut,tube Coupling, manufactured by Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-433-3226 has 1 manufacturer part number on file: 140-25-12D (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution).
Key specifications for 140-25-12D: Width Across Flats: 1.750 INCHES NOMINAL IN; Thread Series: UN; Material Document and Classification: QQ-A-225/5,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Thread Direction: RIGHT-HAND. 14 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.