The Nut,union, cataloged under National Stock Number 4730-00-418-0381, 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 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-418-0381 |
| Primary Part Number | N21015A |
| Item Name | Nut,union |
| 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 |
| Shoulder Step Width | 0.125 INCHES NOMINAL IN |
| Shoulder Width | 0.105 INCHES NOMINAL IN |
| Thread Series | UNS |
| Hole Configuration Style | CONFIGURATION G |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 2.169 INCHES IN |
| Nut Diameter | 2.326 INCHES NOMINAL IN |
| Nut Height | 0.625 INCHES NOMINAL IN |
| Drilled Hole Diameter | 0.062 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE OVERALL |
| Nut Style | ROUND |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | ALUMINUM ALLOY OVERALL |
| Smallest Inside Diameter | 1.841 INCHES NOMINAL IN |
| Hole Type and Quantity | 4 DRILLED |
| Shoulder Seat Diameter | 2.000 INCHES MINIMUM AND 2.165 INCHES MAXIMUM 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 |
|---|---|
| N21015A PRIMARY | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| Reference | Meaning |
|---|---|
| T1039-150 | 5/9 Secondary reference Eaton Aviation Corporation |
| N21015A | 5/9 Secondary reference Eaton Aviation Corporation |
NSN 4730-00-418-0381 is a Nut,union, 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 4730-00-418-0381 has 1 manufacturer part number on file: N21015A (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution).
Key specifications for N21015A: Shoulder Step Width: 0.125 INCHES NOMINAL IN; Shoulder Width: 0.105 INCHES NOMINAL IN; Thread Series: UNS; Hole Configuration Style: CONFIGURATION G. 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.