The Coupling Assembly,quick Disconne, cataloged under National Stock Number 4730-01-289-3574, 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 W.w. Grainger, Inc. Div Government Sales Division. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-289-3574 |
| Primary Part Number | 30E686 AND 30E699 |
| Item Name | Coupling Assembly,quick Disconne |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | W.w. Grainger, Inc. Div Government Sales Division |
| Status | ACTIVE |
| Connection Style | PLAIN FIRST FLUID END CONNECTION |
| Connection Type | THREADED INTERNAL PIPE FIRST FLUID END CONNECTION |
| Connection Type | THREADED EXTERNAL PIPE SECOND FLUID END CONNECTION |
| Style Designator | COUPLING ASSEMBLY |
| Operating Pressure | 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.375 INCHES FIRST FLUID END CONNECTION IN |
| Nominal Thread Size | 0.375 INCHES SECOND FLUID END CONNECTION IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OVERALL |
| Quick Disconnect Method | PUSH-PULL ALL ENDS |
| Thread Series Designator | NPT SECOND FLUID END CONNECTION |
| Thread Series Designator | NPT FIRST FLUID END CONNECTION |
| 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 |
|---|---|
| 6536K29 AND 6534K57 | Mcmaster-Carr Supply Co (USA) |
| 30E686 AND 30E699 PRIMARY | W.w. Grainger, Inc. Div Government Sales Division (USA) |
| 4X791 PRIMARY | W.w. Grainger, Inc. Div Government Sales Division (USA) |
| Reference | Meaning |
|---|---|
| 473000053 | 5/9 Secondary reference Integrity Corporation, Inc. Dba Integrity Supply & Service |
NSN 4730-01-289-3574 is a Coupling Assembly,quick Disconne, manufactured by W.w. Grainger, Inc. Div Government Sales Division, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-289-3574 has 3 manufacturer part numbers on file: 6536K29 AND 6534K57 (Mcmaster-Carr Supply Co), 30E686 AND 30E699 (W.w. Grainger, Inc. Div Government Sales Division), 4X791 (W.w. Grainger, Inc. Div Government Sales Division).
Key specifications for 30E686 AND 30E699: Connection Style: PLAIN FIRST FLUID END CONNECTION; Connection Type: THREADED INTERNAL PIPE FIRST FLUID END CONNECTION; Connection Type: THREADED EXTERNAL PIPE SECOND FLUID END CONNECTION; Style Designator: COUPLING ASSEMBLY. 12 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.