The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-137-7865, 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 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-137-7865 |
| Primary Part Number | 155-S5-4D |
| 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 MIL SPEC SINGLE TREATMENT RESPONSE BODY |
| Connection Style | FLARED ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION |
| Connection Type | INTERNAL QUICK DISCONNECT ALL ENDS |
| Style Designator | MALE COUPLING HALF |
| Material Document and Classification | QQ-A-325 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES ALL ENDS IN |
| Leg Length | 0.984 INCHES NOMINAL IN |
| Features Provided | SELF-SEALING |
| Nominal Thread Size | 0.438 INCHES ALL ENDS IN |
| Seat Angle | 37.0 DEGREES |
| Specification/standard Data | 30003-68A4-D209 MANUFACTURERS SOURCE CONTROL |
| Surface Treatment | ANODIZE BODY |
| Thread Class | 3A ALL ENDS A |
| Material | ALUMINUM ALLOY BODY |
| Quick Disconnect Method | TWIST-LOCK 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 |
|---|---|
| 68A4-D209-1 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 155-S5-4D PRIMARY | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| Reference | Meaning |
|---|---|
| 4730PL0890900 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 4730-01-137-7865 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 4730-01-137-7865 has 2 manufacturer part numbers on file: 68A4-D209-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 155-S5-4D (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution).
Key specifications for 155-S5-4D: Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE BODY; Connection Style: FLARED ALL ENDS; Connection Type: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION; Connection Type: INTERNAL QUICK DISCONNECT ALL ENDS. 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.