The Coupling Assembly,quick Disconne, cataloged under National Stock Number 4730-01-028-9264, 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 17 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-028-9264 |
| Item Name | Coupling Assembly,quick Disconne |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.250 INCHES ALL ENDS IN |
| Connection Style | FLARELESS FIRST FLUID END CONNECTION |
| Connection Type | THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION |
| Connection Type | THREADED EXTERNAL PIPE SECOND FLUID END CONNECTION |
| Style Designator | COUPLING ASSEMBLY |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST FLUID END CONNECTION IN |
| Operating Pressure | 500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Features Provided | SELF-SEALING |
| Nominal Thread Size | 0.438 INCHES FIRST FLUID END CONNECTION IN |
| Nominal Thread Size | 0.250 INCHES SECOND FLUID END CONNECTION IN |
| Seat Angle | 12.0 DEGREES |
| Thread Class | 3A FIRST FLUID END CONNECTION A |
| Material | STEEL OVERALL |
| Quick Disconnect Method | CAM-LOCKING ALL ENDS |
| Thread Series Designator | UNF FIRST FLUID END CONNECTION |
| Thread Series Designator | NPTF SECOND 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 |
| Reference | Meaning |
|---|---|
| 332-2721-050 | 5/2 Secondary reference U.S. Government activity |
| 298-PSS 1/4 X 1/4 | 3/9 Design control — primary reference Imperial |
NSN 4730-01-028-9264 is a Coupling Assembly,quick Disconne, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-028-9264: Nominal Pipe Size Accommodated: 0.250 INCHES ALL ENDS IN; Connection Style: FLARELESS FIRST FLUID END CONNECTION; Connection Type: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION; Connection Type: THREADED EXTERNAL PIPE SECOND FLUID END CONNECTION. 17 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.