The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-028-1789, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Smiths Tubular Systems-Laconia, Inc.. Government technical data includes 28 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-028-1789 |
| Primary Part Number | GH511DN2 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Smiths Tubular Systems-Laconia, Inc. |
| Status | ACTIVE |
| Flow Angle | 45.0 DEGREES SECOND END |
| Measuring Method and Length | 14.424 INCHES NOMINAL WORKING IN |
| Temp Rating | -65.0 FAHRENHEIT AND 450.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| 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 |
| Supplementary Features | THIS ITEM HAS BEEN REVIEWED FOR ASBESTOS MATERIAL. THE CURRENT APPROVED SOURCE, 78570, HAS INDICATED THEIR PART NUMBER CONTAINED ASBESTOS. THEY CONTINUE TO MANUFACTURE THE SAME PART NUMBER WITHOUT ASBESTOS MATERIAL |
| Layer Composition and Location | OUTER LAYER BRAIDED CORROSION RESISTANT STEEL WIRE |
| Connection Type | THREADED INTERNAL TUBE SECOND END |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 1.792 INCHES NOMINAL IN |
| Operating Pressure | 750.0 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 | 1.844 INCHES SECOND END IN |
| Nominal Thread Size | 1.844 INCHES FIRST END IN |
| Seat Angle | 8.5 DEGREES FIRST END |
| Seat Angle | 8.5 DEGREES SECOND END |
| Inside Diameter | 1.062 INCHES NOMINAL IN |
| Inside Surface Condition | CONVOLUTED |
| Thread Class | 3B SECOND END |
| Thread Class | 3B FIRST END |
| Thread Quantity Per Inch | 14 FIRST END |
| Thread Quantity Per Inch | 14 SECOND END |
| Thread Series Designator | UNJS SECOND END |
| Thread Series Designator | UNJS 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 |
|---|---|
| GH511DN2 PRIMARY | Smiths Tubular Systems-Laconia, Inc. (USA) |
| Reference | Meaning |
|---|---|
| GH511DN2 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| 97589-2 | 5/9 Secondary reference Smiths Tubular Systems-Laconia, Inc. |
NSN 4720-01-028-1789 is a Hose Assembly,nonmetallic, manufactured by Smiths Tubular Systems-Laconia, Inc., classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-028-1789 has 1 manufacturer part number on file: GH511DN2 (Smiths Tubular Systems-Laconia, Inc.).
Key specifications for GH511DN2: Flow Angle: 45.0 DEGREES SECOND END; Measuring Method and Length: 14.424 INCHES NOMINAL WORKING IN; Temp Rating: -65.0 FAHRENHEIT AND 450.0 FAHRENHEIT SINGLE RESPONSE DEGF; Connection Style: SWIVEL NUT FLARE SECOND END. 28 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.