The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-620-8645, 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 10 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-620-8645 |
| Primary Part Number | 801-6640963 ASSY 264 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Measuring Method and Length | 42.00 INCHES NOMINAL RANDOM IN |
| Connection Type | EXTERNAL QUICK DISCONNECT FIRST END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Cross-Sectional Shape Style | ROUND |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Quick Disconnect Nominal Size | 0.250 INCHES FIRST END IN |
| Nominal Thread Size | 0.500 INCHES SECOND END IN |
| Media for Which Designed | FLUID SINGLE RESPONSE |
| Thread Class | 2A FIRST END A |
| Thread Series Designator | UNF SECOND END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 551-7068128-F289 | Naval Sea Systems Command (USA) |
| 801-6640963 ASSY 264 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 263322501-0264 | 5/2 Secondary reference U.S. Government activity |
| 551-7068128-F288 | 5/9 Secondary reference Naval Sea Systems Command |
| 2633-225-01 ASSY 264 | 5/9 Secondary reference U.S. Government activity |
| H765-1507-F289 | 5/2 Secondary reference U.S. Government activity |
| H765-1507-F288 | 5/9 Secondary reference U.S. Government activity |
NSN 4720-01-620-8645 is a Hose Assembly,nonmetallic, manufactured by Naval Sea Systems Command, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-620-8645 has 2 manufacturer part numbers on file: 551-7068128-F289 (Naval Sea Systems Command), 801-6640963 ASSY 264 (Naval Sea Systems Command).
Key specifications for 801-6640963 ASSY 264: Measuring Method and Length: 42.00 INCHES NOMINAL RANDOM IN; Connection Type: EXTERNAL QUICK DISCONNECT FIRST END; Connection Type: THREADED EXTERNAL TUBE SECOND END; Cross-Sectional Shape Style: ROUND. 10 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.