The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-451-8978, 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 23 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-451-8978 |
| Primary Part Number | 6726420-21 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Measuring Method and Length | 10.0 FEET NOMINAL OVERALL FT |
| Temp Rating | -65.0 FAHRENHEIT AND 400.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Minimum Inside Bending Radius | 12.500 INCHES IN |
| Connection Style | SWIVEL NUT FLARE FIRST END |
| End Connection Design | STRAIGHT FIRST END |
| Layer Composition and Location | 1ST LAYER BRAIDED TEXTILE YARN AND 2ND LAYER BRAIDED STEEL WIRE AND OUTER LAYER MOLDED RUBBER, ETHYLENE PROPYLENE |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 2.900 INCHES NOMINAL IN |
| Operating Pressure | 100.0 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 | 3.000 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Exterior Color | BLACK |
| Inside Diameter | 2.500 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Hydrostatic Test Pressure | 150.0 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3B FIRST END |
| Burst Test Pressure | 300.0 POUNDS PER SQUARE INCH LBS |
| Thread Quantity Per Inch | 12 FIRST END |
| Outer Covering Environmental Protection | OZONE RESISTANT AND WEATHERPROOF |
| 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 | X |
| Part Number | Manufacturer |
|---|---|
| 6726420-21 PRIMARY | Naval Sea Systems Command (USA) |
NSN 4720-01-451-8978 is a Hose Assembly,nonmetallic, manufactured by Naval Sea Systems Command, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-451-8978 has 1 manufacturer part number on file: 6726420-21 (Naval Sea Systems Command).
Key specifications for 6726420-21: Measuring Method and Length: 10.0 FEET NOMINAL OVERALL FT; Temp Rating: -65.0 FAHRENHEIT AND 400.0 FAHRENHEIT SINGLE RESPONSE DEGF; Minimum Inside Bending Radius: 12.500 INCHES IN; Connection Style: SWIVEL NUT FLARE FIRST END. 23 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.