The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-139-1668, is classified within Federal Supply Class 4720 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Electric Boat Corporation Div General Dynamics Electric Boat. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-139-1668 |
| Primary Part Number | 4677473-00B1 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — No Item Name Available |
| Manufacturer | Electric Boat Corporation Div General Dynamics Electric Boat |
| Status | ACTIVE |
| Measuring Method and Length | 300.000 INCHES NOMINAL OVERALL IN |
| Inside Surface Condition | SMOOTH |
| Thread Series Designator | NPSH FIRST END |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Layer Composition and Location | 1ST LAYER SPIRALLY WRAPPED COTTON FABRIC AND 2ND LAYER SPIRALLY WRAPPED COTTON FABRIC AND 3RD LAYER BRAIDED FABRIC AND 4TH LAYER WOVEN FABRIC AND 5TH LAYER WOVEN FABRIC AND OUTER LAYER MOLDED RUBBER, SYNTHETIC |
| Thread Direction | RIGHT-HAND FIRST END |
| Media for Which Designed | WATER SINGLE RESPONSE |
| Burst Test Pressure | 600.0 POUNDS PER SQUARE INCH LBS |
| Inside Diameter | 0.500 INCHES NOMINAL IN |
| Connection Style | PLAIN OPTIONAL END FIRST END |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| End Fitting Component and Material | COMPLETE FITTING COPPER ALLOY ALL ENDS |
| End Connection Design | STRAIGHT FIRST END |
| Cross-Sectional Shape Style | ROUND |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 87917-3250 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 4677473-00B1 PRIMARY | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 608-4685638 | Naval Ship Systems Command (USA) |
| 608-4685638 ITEM 15 PRIMARY | Naval Ship Systems Command (USA) |
NSN 4720-01-139-1668 is a Hose Assembly,nonmetallic, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 4720 (No Item Name Available). Status: active.
NSN 4720-01-139-1668 has 4 cross-referenced part numbers: 87917-3250 (Electric Boat Corporation Div General Dynamics Electric Boat), 4677473-00B1 (Electric Boat Corporation Div General Dynamics Electric Boat), 608-4685638 (Naval Ship Systems Command), 608-4685638 ITEM 15 (Naval Ship Systems Command).
There are 12 known substitutes for 4720-01-139-1668: 4720-00-394-2708, 4720-00-491-0936, 4720-01-091-1377 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 4677473-00B1: Measuring Method and Length: 300.000 INCHES NOMINAL OVERALL IN; Inside Surface Condition: SMOOTH; Thread Series Designator: NPSH FIRST END; Nominal Thread Size: 0.500 INCHES FIRST END IN. 16 total characteristics are documented in the Federal Logistics Information System.