The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-423-8761, 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 Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 6 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-423-8761 |
| Primary Part Number | AA59439-008-12-20-B |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| Status | ACTIVE |
| Connection Style | BARBED OR SERRATED END ALL ENDS |
| Nominal Inside Diameter Hose Accommodated | 0.375 INCHES ALL ENDS IN |
| Specification/standard Data | 81349-MIL-C-4109 GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | C CLASS AND 1 TYPE AND 4 STYLE |
| Material | COPPER ALLOY BODY |
| Quick Disconnect Method | PUSH-PULL 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 |
| Part Number | Manufacturer |
|---|---|
| AA59439-008-12-20-B | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| Reference | Meaning |
|---|---|
| MIL-C-4109 | 5/9 Secondary reference U.S. Government activity |
| M4109-08-12-20-B | 5/9 Secondary reference U.S. Government activity |
| AA59439-08-12-20-B | 5/9 Secondary reference Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| M4109-08-12-20-C | 5/9 Secondary reference U.S. Government activity |
| A-A-59439 | 4/1 Identification reference Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
NSN 4730-01-423-8761 is a Coupling Half,quick Disconnect, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-423-8761 has 1 manufacturer part number on file: AA59439-008-12-20-B (Federal Commercial Item Description Promulgated by General Services Administration Washington DC).
Key specifications for AA59439-008-12-20-B: Connection Style: BARBED OR SERRATED END ALL ENDS; Nominal Inside Diameter Hose Accommodated: 0.375 INCHES ALL ENDS IN; Specification/standard Data: 81349-MIL-C-4109 GOVERNMENT SPECIFICATION; Nondefinitive Spec/std Data: C CLASS AND 1 TYPE AND 4 STYLE. 6 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.