The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-019-2720, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Navpar Inc. Government technical data includes 29 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-019-2720 |
| Primary Part Number | CB57-43158-70 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Navpar Inc |
| Status | ACTIVE |
| Flow Angle | 45.0 DEGREES SECOND END |
| Measuring Method and Length | 91.000 INCHES NOMINAL EXCLUDING END FITTINGS IN |
| Temp Rating | -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Minimum Inside Bending Radius | 12.000 INCHES IN |
| Connection Style | SWIVEL NUT FLARE SECOND END |
| Connection Style | SWIVEL NUT FLARE FIRST END |
| End Connection Design | ELBOW SECOND END |
| End Connection Design | STRAIGHT FIRST END |
| Vacuum in Torr | 127.0 |
| Layer Composition and Location | 1ST LAYER BRAIDED WIRE AND 2ND LAYER BRAIDED FABRIC AND OUTER LAYER MOLDED RUBBER, CHLOROPRENE |
| Connection Type | THREADED INTERNAL TUBE SECOND END |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 1.516 INCHES NOMINAL IN |
| Operating Pressure | 4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Features Provided | NONSKIVE |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 1.312 INCHES FIRST END IN |
| Nominal Thread Size | 1.312 INCHES SECOND END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Seat Angle | 37.0 DEGREES SECOND END |
| Exterior Color | BLACK |
| Inside Diameter | 1.000 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Hydrostatic Test Pressure | 8000.0 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2B FIRST END |
| Thread Class | 2B SECOND END |
| Burst Test Pressure | 16000.0 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| CB57-43158-70 PRIMARY | Navpar Inc (USA) |
| Reference | Meaning |
|---|---|
| CB57-43171PC1 | 5/9 Secondary reference U.S. Government activity |
| CB57-43158 | D/9 Drawing number reference only U.S. Government activity |
| CB57-43158-70 | 5/9 Secondary reference U.S. Government activity |
| CB57-43171 | D/9 Drawing number reference only U.S. Government activity |
NSN 4720-01-019-2720 is a Hose Assembly,nonmetallic, manufactured by Navpar Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-019-2720 has 1 manufacturer part number on file: CB57-43158-70 (Navpar Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4720-01-025-0273, 4720-01-044-1646. Verify interchangeability with system specifications before substitution.
Key specifications for CB57-43158-70: Flow Angle: 45.0 DEGREES SECOND END; Measuring Method and Length: 91.000 INCHES NOMINAL EXCLUDING END FITTINGS IN; Temp Rating: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF; Minimum Inside Bending Radius: 12.000 INCHES IN. 29 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.