The Nut,union, cataloged under National Stock Number 4730-01-006-1730, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-006-1730 |
| Primary Part Number | 56153-1-4-9 |
| 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 |
| Width Across Flats | 1.575 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN |
| Shoulder Step Width | 0.375 INCHES NOMINAL IN |
| Shoulder Width | 0.250 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS 2412 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNEF |
| Material Document and Classification | QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.250 INCHES IN |
| Nut Height | 1.312 INCHES NOMINAL IN |
| Surface Treatment | SILVER OVERALL |
| Nut Style | HEXAGON |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP 1018 OVERALL |
| Smallest Inside Diameter | 0.872 INCHES NOMINAL 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 |
|---|---|
| 56153-1-4-9 PRIMARY | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
NSN 4730-01-006-1730 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 4730-01-006-1730 has 1 manufacturer part number on file: 56153-1-4-9 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution).
Key specifications for 56153-1-4-9: Width Across Flats: 1.575 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN; Shoulder Step Width: 0.375 INCHES NOMINAL IN; Shoulder Width: 0.250 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS 2412 ASSN STD SINGLE TREATMENT RESPONSE OVERALL. 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.