The Expansion Joint,pipe, cataloged under National Stock Number 4730-01-285-6318, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Hyspan Precision Products, Inc. Dba Hyspan Precision Products Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-285-6318 |
| Primary Part Number | 34744 |
| Item Name | Expansion Joint,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Hyspan Precision Products, Inc. Dba Hyspan Precision Products Inc |
| Status | ACTIVE |
| Nominal Pipe Size Designation | 12.000 INCHES IN |
| Design Type | CORRUGATED ELEMENT |
| End Connection Type | FLANGED |
| Working Pressure Rating | 190.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Material | STEEL FLANGE |
| Joint Type | DOUBLE |
| Flange Outside Diameter | 19.000 INCHES NOMINAL IN |
| 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 |
|---|---|
| 34744 | Hyspan Precision Products, Inc. (USA) |
| 1511SP-34744 | Hyspan Precision Products, Inc. (USA) |
| 34744 PRIMARY | Hyspan Precision Products, Inc. Dba Hyspan Precision Products Inc (USA) |
NSN 4730-01-285-6318 is a Expansion Joint,pipe, manufactured by Hyspan Precision Products, Inc. Dba Hyspan Precision Products Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-285-6318 has 3 manufacturer part numbers on file: 34744 (Hyspan Precision Products, Inc.), 1511SP-34744 (Hyspan Precision Products, Inc.), 34744 (Hyspan Precision Products, Inc. Dba Hyspan Precision Products Inc).
Key specifications for 34744: Nominal Pipe Size Designation: 12.000 INCHES IN; Design Type: CORRUGATED ELEMENT; End Connection Type: FLANGED; Overall Length: 45.000 INCHES NOMINAL IN. 7 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.