The Locknut,tube Fitting, cataloged under National Stock Number 4730-00-178-0044, 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 General Electric Company. 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 | 4730-00-178-0044 |
| Primary Part Number | J530P04 |
| Item Name | Locknut,tube Fitting |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Width Across Flats | 0.679 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN |
| Packing Recess Diameter | 0.608 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS 2470 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Nut Height | 0.281 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE OVERALL |
| Nut Style | TUBE FITTING LOCKNUT |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | ALUMINUM ALLOY OVERALL |
| Nominal Tube Outside Diameter | 0.250 INCHES IN |
| Packing Recess Depth | 0.042 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 |
|---|---|
| J530P04 PRIMARY | General Electric Company (USA) |
NSN 4730-00-178-0044 is a Locknut,tube Fitting, manufactured by General Electric Company, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-178-0044 has 1 manufacturer part number on file: J530P04 (General Electric Company).
Key specifications for J530P04: Width Across Flats: 0.679 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN; Packing Recess Diameter: 0.608 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS 2470 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF). 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.