The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-508-3052, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 27 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4720-01-508-3052 |
| Primary Part Number | 801-6640963 ASSY 139 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES FIRST END |
| Measuring Method and Length | 34.540 INCHES NOMINAL OVERALL IN |
| Temp Rating | -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Minimum Inside Bending Radius | 6.500 INCHES IN |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END |
| End Connection Design | STRAIGHT SECOND END |
| End Connection Design | ELBOW FIRST END |
| Criticality Code Justification | FEAT |
| Layer Composition and Location | OUTER LAYER MOLDED RUBBER, SYNTHETIC AND 1ST LAYER BRAIDED POLYESTER CORD AND 2ND LAYER BRAIDED POLYESTER CORD |
| Connection Type | THREADED EXTERNAL BOSS FIRST END |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 1.055 INCHES MINIMUM AND 1.101 INCHES MAXIMUM IN |
| Operating Pressure | 550.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 1.750 INCHES SECOND END IN |
| Nominal Thread Size | 1.750 INCHES FIRST END IN |
| Inside Diameter | 0.625 INCHES MINIMUM AND 0.667 INCHES MAXIMUM IN |
| Inside Surface Condition | SMOOTH |
| Media for Which Designed | HYDRAULIC FLUID SINGLE RESPONSE |
| Hydrostatic Test Pressure | 1100.0 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A FIRST END A |
| Thread Class | 1A SECOND END A |
| Burst Test Pressure | 2200.0 POUNDS PER SQUARE INCH LBS |
| Thread Quantity Per Inch | 12 SECOND END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 801-6640963 ASSY 139 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2633-225-01 ASSY 139 | 5/2 Secondary reference U.S. Government activity |
NSN 4720-01-508-3052 is a Hose Assembly,nonmetallic, manufactured by Naval Sea Systems Command, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-508-3052 has 1 manufacturer part number on file: 801-6640963 ASSY 139 (Naval Sea Systems Command).
Key specifications for 801-6640963 ASSY 139: Flow Angle: 90.0 DEGREES FIRST END; Measuring Method and Length: 34.540 INCHES NOMINAL OVERALL IN; Temp Rating: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF; Minimum Inside Bending Radius: 6.500 INCHES IN. 27 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.