The Coupling Assembly,self-Sealing, cataloged under National Stock Number 4730-00-203-7499, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4730-00-203-7499 |
| Primary Part Number | 157-6 |
| Item Name | Coupling Assembly,self-Sealing |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| Status | CANCELLED |
| Style Designator | COUPLING ASSEMBLY |
| Second End Relationship with First End | NOT IDENTICAL |
| Material | ALUMINUM ALLOY BODY |
| Nominal Thread Size | 0.562 INCHES FIRST QUICK DISCONNECT END IN |
| Surface Treatment | ANODIZE BODY |
| Style Designator | COUPLING ASSEMBLY |
| Nominal Thread Size | 0.562 INCHES SECOND QUICK DISCONNECT END IN |
| Nominal Thread Size | 0.562 INCHES SECOND QUICK DISCONNECT END IN |
| Thread Class | 3A SECOND QUICK DISCONNECT END A |
| Thread Class | 3A FIRST QUICK DISCONNECT END A |
| Second Leg Length | 0.556 INCHES NOMINAL IN |
| Connection Type | THREADED EXTERNAL TUBE SECOND QUICK DISCONNECT END |
| First Leg Length | 1.094 INCHES NOMINAL IN |
| Features Provided | SELF-SEALING |
| Connection Style | FLARED SECOND QUICK DISCONNECT END |
| Connection Style | FLARED FIRST QUICK DISCONNECT END |
| Connection Type | THREADED EXTERNAL TUBE FIRST QUICK DISCONNECT END |
| Thread Series Designator | UNF FIRST QUICK DISCONNECT END |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES FIRST QUICK DISCONNECT END IN |
| Second End Relationship with First End | NOT IDENTICAL |
| Nominal Thread Size | 0.562 INCHES FIRST QUICK DISCONNECT END IN |
| Surface Treatment | ANODIZE BODY |
| Thread Series Designator | UNF SECOND QUICK DISCONNECT END |
| Seat Angle | 37.0 DEGREES |
| Thread Series Designator | UNF SECOND QUICK DISCONNECT END |
| Seat Angle | 37.0 DEGREES |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES SECOND QUICK DISCONNECT END IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES SECOND QUICK DISCONNECT END IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 157-6D | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| 157-6 PRIMARY | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| MILC5502 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
NSN 4730-00-203-7499 is a Coupling Assembly,self-Sealing, manufactured by Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution, classified under FSC 4730 (No Item Name Available). Status: cancelled.
NSN 4730-00-203-7499 has 3 cross-referenced part numbers: 157-6D (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), 157-6 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), MILC5502 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).
There are 12 known substitutes for 4730-00-203-7499: 4730-00-202-9400, 4730-00-202-9402, 4730-00-202-9408 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 157-6: Style Designator: COUPLING ASSEMBLY; Second End Relationship with First End: NOT IDENTICAL; Material: ALUMINUM ALLOY BODY; Nominal Thread Size: 0.562 INCHES FIRST QUICK DISCONNECT END IN. 30 total characteristics are documented in the Federal Logistics Information System.
NSN 4730-00-203-7499 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.