The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-00-437-0170, 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 Williams International Co., L.l.c.. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-437-0170 |
| Primary Part Number | 16657 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Williams International Co., L.l.c. |
| Status | ACTIVE |
| Thread Quantity Per Inch | 12 FIRST QUICK DISCONNECT END |
| Connection Type | THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION |
| Connection Type | INTERNAL QUICK DISCONNECT ALL ENDS |
| Material | STEEL BODY |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE BODY |
| Thread Class | 3A ALL ENDS A |
| Seat Angle | 37.0 DEGREES |
| Nominal Thread Size | 1.062 INCHES ALL ENDS IN |
| Style Designator | MALE COUPLING HALF |
| Thread Series Designator | UN ALL ENDS |
| Connection Style | FLARED ALL ENDS |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES ALL ENDS IN |
| Quick Disconnect Method | TWIST-LOCK ALL ENDS |
| Leg Length | 0.865 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| EM16657-101 | E & M Equipment Co (USA) |
| 16657-101 | Williams International Co., L.l.c. (USA) |
| 16657 PRIMARY | Williams International Co., L.l.c. (USA) |
| 98154-1 | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| 98154-1 | Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector (USA) |
NSN 4730-00-437-0170 is a Coupling Half,quick Disconnect, manufactured by Williams International Co., L.l.c., classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-00-437-0170 has 5 cross-referenced part numbers: EM16657-101 (E & M Equipment Co), 16657-101 (Williams International Co., L.l.c.), 16657 (Williams International Co., L.l.c.), 98154-1 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems), 98154-1 (Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector).
There are 5 known substitutes for 4730-00-437-0170: 3020-01-197-8682, 3120-01-462-7193, 4720-01-516-9527 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 16657: Overall Length: 1.920 INCHES NOMINAL IN; Thread Quantity Per Inch: 12 FIRST QUICK DISCONNECT END; Connection Type: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION; Connection Type: INTERNAL QUICK DISCONNECT ALL ENDS. 15 total characteristics are documented in the Federal Logistics Information System.