The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-216-7625, 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 Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-216-7625 |
| Primary Part Number | 015591S2-12D |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625 FED STD SINGLE TREATMENT RESPONSE BODY |
| Connection Style | FLARED ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION |
| Connection Type | EXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END |
| Style Designator | MALE COUPLING HALF |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES ALL ENDS IN |
| Leg Length | 1.861 INCHES NOMINAL IN |
| Nominal Thread Size | 1.625 INCHES ALL ENDS IN |
| Seat Angle | 37.0 DEGREES |
| Surface Treatment | ANODIZE BODY |
| Thread Class | 3A ALL ENDS A |
| Material | ALUMINUM BODY |
| Quick Disconnect Method | PUSH-PULL ALL ENDS |
| Thread Series Designator | UNF 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 |
|---|---|
| GC550HH12A | Northrop Grumman Systems Corporation (USA) |
| 015591S2-12D PRIMARY | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| Reference | Meaning |
|---|---|
| GC550HH | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
NSN 4730-01-216-7625 is a Coupling Half,quick Disconnect, manufactured by Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-216-7625 has 2 manufacturer part numbers on file: GC550HH12A (Northrop Grumman Systems Corporation), 015591S2-12D (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution).
Key specifications for 015591S2-12D: Surface Treatment Document and Classification: MIL-A-8625 FED STD SINGLE TREATMENT RESPONSE BODY; Connection Style: FLARED ALL ENDS; Connection Type: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION; Connection Type: EXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END. 14 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.