The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-520-4027, 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 22 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-520-4027 |
| Primary Part Number | 801-6640963 ASSY 229 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Measuring Method and Length | 29.860 INCHES NOMINAL OVERALL IN |
| Temp Rating | -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Minimum Inside Bending Radius | 6.000 INCHES IN |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END |
| End Connection Design | STRAIGHT FIRST END |
| Criticality Code Justification | FEAT |
| Layer Composition and Location | OUTER LAYER MOLDED RUBBER, NITRILE AND 1ST LAYER BRAIDED WIRE AND 2ND LAYER BRAIDED WIRE |
| Connection Type | THREADED EXTERNAL BOSS FIRST END |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.938 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Operating Pressure | 6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Features Provided | REUSABLE END FITTINGS |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 1.188 INCHES FIRST END IN |
| Inside Diameter | 0.368 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN |
| Inside Surface Condition | SMOOTH |
| Media for Which Designed | AIR AND HYDRAULIC FLUID AND GAS SINGLE RESPONSE |
| Hydrostatic Test Pressure | 8000.0 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3 FIRST END |
| Burst Test Pressure | 20000.0 POUNDS PER SQUARE INCH LBS |
| Thread Quantity Per Inch | 12 FIRST END |
| Thread Series Designator | UN FIRST 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 229 PRIMARY | Naval Sea Systems Command (USA) |
| 556-7409612-F191 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 218040262A | 5/2 Secondary reference U.S. Government activity |
| 2633-225-01-ASSY-229 | 5/2 Secondary reference U.S. Government activity |
| B793-3100-F191 | 5/2 Secondary reference U.S. Government activity |
NSN 4720-01-520-4027 is a Hose Assembly,nonmetallic, manufactured by Naval Sea Systems Command, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-520-4027 has 2 manufacturer part numbers on file: 801-6640963 ASSY 229 (Naval Sea Systems Command), 556-7409612-F191 (Naval Sea Systems Command).
Key specifications for 801-6640963 ASSY 229: Measuring Method and Length: 29.860 INCHES NOMINAL OVERALL IN; Temp Rating: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF; Minimum Inside Bending Radius: 6.000 INCHES IN; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END. 22 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.