The Hose Assembly,metallic, cataloged under National Stock Number 4720-00-752-9998, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Hyspan Precision Products, Inc.. Government technical data includes 24 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-00-752-9998 |
| Primary Part Number | AT1808-4 |
| Item Name | Hose Assembly,metallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Hyspan Precision Products, Inc. |
| Status | ACTIVE |
| Measuring Method and Length | 42.000 INCHES NOMINAL WORKING IN |
| Temp Rating | 200.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Minimum Inside Bending Radius | 15.000 INCHES IN |
| Connection Style | RAISED FIRST END |
| Flange Outside Diameter | 6.000 INCHES NOMINAL FIRST END IN |
| End Connection Design | STRAIGHT FIRST END |
| Layer Composition and Location | OUTER LAYER BRAIDED COPPER WIRE |
| Layer Composition and Location | 1ST LAYER BRAIDED COPPER WIRE |
| Connection Type | RAISED FACE FLANGE FIRST END |
| Bolt Hole Diameter | 0.750 INCHES NOMINAL FIRST END IN |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 2.935 INCHES NOMINAL IN |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Features Provided | IDENTICAL ENDS |
| Inside Diameter | 2.000 INCHES NOMINAL IN |
| Bolt Hole Quantity | 4 FIRST END |
| Bolt Circle Diameter | 4.750 INCHES NOMINAL FIRST END IN |
| Raised Face Diameter | 2.750 INCHES NOMINAL FIRST END IN |
| Raised Face Height | 0.062 INCHES NOMINAL FIRST END IN |
| Hydrostatic Test Pressure | 225.0 POUNDS PER SQUARE INCH LBS |
| Burst Test Pressure | 300.0 POUNDS PER SQUARE INCH LBS |
| Flange Style | ROUND W / BOLT HOLES FIRST END |
| End Flange Construction | SOLID FIRST END |
| Inner Conveying Tube Style | ANNULAR CLOSE-PITCH CORRUGATED |
| 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 |
|---|---|
| AT1808-4 | Hyspan Precision Products, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 73742-15X2PCASSY4D | 3/1 Design control — primary reference U.S. Government activity |
NSN 4720-00-752-9998 is a Hose Assembly,metallic, manufactured by Hyspan Precision Products, Inc., classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-752-9998 has 1 manufacturer part number on file: AT1808-4 (Hyspan Precision Products, Inc.).
Key specifications for AT1808-4: Measuring Method and Length: 42.000 INCHES NOMINAL WORKING IN; Temp Rating: 200.0 FAHRENHEIT SINGLE RESPONSE DEGF; Minimum Inside Bending Radius: 15.000 INCHES IN; Connection Style: RAISED FIRST END. 24 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.