The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-00-720-2000, 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 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-00-720-2000 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | PLAIN ALL ENDS |
| Bolt Circle Nominal Diameter | 2.687 INCHES IN |
| Mating End Identification | EASTERN AIRCRAFT PRODUCTS DIV OF WEATHERHEAD CO. COUPLING HALF,QUICK DISCONNECT,PART NO. 20772-2F |
| Connection Type | FLANGE FIRST FLUID END CONNECTION |
| Style Designator | MALE COUPLING HALF |
| Bolt Hole Nominal Diameter | 0.271 INCHES IN |
| Features Provided | SAFETY LOCKING FEATURE AND SELF-SEALING |
| Basic Shape Style | ROUND FIRST FLUID END CONNECTION |
| Nominal Outside Diameter | 3.360 INCHES IN |
| Bolt Hole Quantity | 4 |
| Surface Treatment | ANODIZE BODY |
| Material | ALUMINUM ALLOY BODY |
| Quick Disconnect Method | TWIST-LOCK 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 |
|---|---|
| 6520-773044 | 3/2 Design control — primary reference U.S. Government activity |
| 20773-4F | 5/9 Secondary reference U.S. Government activity |
NSN 4730-00-720-2000 is a Coupling Half,quick Disconnect, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-720-2000: Connection Style: PLAIN ALL ENDS; Bolt Circle Nominal Diameter: 2.687 INCHES IN; Mating End Identification: EASTERN AIRCRAFT PRODUCTS DIV OF WEATHERHEAD CO. COUPLING HALF,QUICK DISCONNECT,PART NO. 20772-2F; Connection Type: FLANGE FIRST FLUID END CONNECTION. 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.