The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-389-6411, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-389-6411 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 DUST PLUG ASSEMBLY AND 4 PREFORMED PACKING |
| Surface Treatment Document and Classification | MIL-A-8625, GREEN MIL SPEC SINGLE TREATMENT RESPONSE BODY |
| Connection Style | FLARED ALL ENDS |
| Connection Type | UNTHREADED INTERNAL TUBE ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION |
| Style Designator | MALE COUPLING HALF |
| Nominal Outside Diameter Tube Accommodated | 0.312 INCHES ALL ENDS IN |
| Operating Pressure | 115.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 1.016 INCHES NOMINAL IN |
| Nominal Thread Size | 0.500 INCHES ALL ENDS IN |
| Seat Angle | 37.0 DEGREES |
| Maximum Operating Temp | -70.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Surface Treatment | ANODIZE BODY |
| Media for Which Designed | OXYGEN, LIQUID SINGLE RESPONSE |
| Thread Class | 3A ALL ENDS A |
| Material | ALUMINUM ALLOY BODY |
| Quick Disconnect Method | PUSH-PULL ALL ENDS |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 1QF21G4S52A | 3/1 Design control — primary reference Hydraflow |
| 17B2N8003-505 | 5/2 Secondary reference U.S. Government activity |
NSN 4730-01-389-6411 is a Coupling Half,quick Disconnect, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-389-6411: Furnished Items and Quantity: 1 DUST PLUG ASSEMBLY AND 4 PREFORMED PACKING; Surface Treatment Document and Classification: MIL-A-8625, GREEN MIL SPEC SINGLE TREATMENT RESPONSE BODY; Connection Style: FLARED ALL ENDS; Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS. 18 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.