The Coupling Assembly,quick Disconne, cataloged under National Stock Number 4730-01-685-8573, 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 Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupling Division. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-685-8573 |
| Primary Part Number | EZ-501-8FP |
| Item Name | Coupling Assembly,quick Disconne |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupling Division |
| Status | ACTIVE |
| Connection Type | AIR CHUCK QUICK DISCONNECT FIRST QUICK DISCONNECT END |
| Connection Type | THREADED INTERNAL PIPE MOUNTING FLANGE |
| Style Designator | COUPLING ASSEMBLY, THREADED INTERNAL |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Quick Disconnect Nominal Size | 0.500 INCHES ALL ENDS IN |
| Basic Shape Style | ROUND FIRST QUICK DISCONNECT END |
| Basic Shape Style | HEXAGON MOUNTING FLANGE |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Surface Treatment | CHROMIUM BODY |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Nominal Coupling Size Accommodated | 0.500 INCHES ALL ENDS IN |
| Material | STEEL BODY |
| Thread Series Designator | NPTF MOUNTING FLANGE |
| 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 |
|---|---|
| EZ-501-8FP PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupling Division (USA) |
| Reference | Meaning |
|---|---|
| EZ5018FP | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-685-8573 is a Coupling Assembly,quick Disconne, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupling Division, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-685-8573 has 1 manufacturer part number on file: EZ-501-8FP (Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupling Division).
Key specifications for EZ-501-8FP: Connection Type: AIR CHUCK QUICK DISCONNECT FIRST QUICK DISCONNECT END; Connection Type: THREADED INTERNAL PIPE MOUNTING FLANGE; Style Designator: COUPLING ASSEMBLY, THREADED INTERNAL; Operating Pressure: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 13 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.