The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-602-7781, 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 Morrison Brothers Co Dba Morrison Brothers Co. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-602-7781 |
| Primary Part Number | 73590BA640 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Morrison Brothers Co Dba Morrison Brothers Co |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES |
| Connection Style | CAM (EXTERNAL) FIRST QUICK DISCONNECT END |
| Connection Style | GROOVED SECOND QUICK DISCONNECT END |
| Nominal Length | 14.094 INCHES IN |
| Connection Type | EXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END |
| Connection Type | GROOVED COUPLING SECOND QUICK DISCONNECT END |
| Quick Disconnect Nominal Size | 4.000 INCHES FIRST QUICK DISCONNECT END IN |
| Leg Length | 12.563 INCHES NOMINAL IN |
| Basic Shape Style | ROUND W/OUT BOLT HOLES SECOND QUICK DISCONNECT END |
| Surface Treatment | ANODIZE BODY |
| Depth | 10.563 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY BODY |
| Quick Disconnect Method | CAM-LOCKING FIRST QUICK DISCONNECT END |
| 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 |
|---|---|
| 73590BA640 PRIMARY | Morrison Brothers Co Dba Morrison Brothers Co (USA) |
| Reference | Meaning |
|---|---|
| MB6090BA4HDL-LD | D/9 Drawing number reference only Morrison Brothers Co Dba Morrison Brothers Co |
NSN 4730-01-602-7781 is a Coupling Half,quick Disconnect, manufactured by Morrison Brothers Co Dba Morrison Brothers Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-602-7781 has 1 manufacturer part number on file: 73590BA640 (Morrison Brothers Co Dba Morrison Brothers Co).
Key specifications for 73590BA640: Flow Angle: 90.0 DEGREES; Connection Style: CAM (EXTERNAL) FIRST QUICK DISCONNECT END; Connection Style: GROOVED SECOND QUICK DISCONNECT END; Nominal Length: 14.094 INCHES IN. 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.