The Union,pipe, cataloged under National Stock Number 4730-01-371-2597, 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 Dresser, Llc. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-371-2597 |
| Primary Part Number | 701664 |
| Item Name | Union,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Dresser, Llc |
| Status | ACTIVE |
| Flange Shape | HEXAGON FIRST END |
| Nominal Width Across Flats | 0.625 INCHES FIRST END IN |
| Nominal Length | 0.312 MILLIMETERS FIRST END MM |
| Nominal Length | 0.594 MILLIMETERS ALL ENDS MM |
| Nominal Thread Size | 0.563 MILLIMETERS SECOND END MM |
| Nominal Outside Diameter | 0.500 INCHES SECOND END IN |
| Thread Quantity Per Inch | 18 SECOND END |
| Material | STEEL COMP 303 OVERALL |
| Thread Series Designator | UNF SECOND END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4730-01-371-2597 is a Union,pipe, manufactured by Dresser, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-371-2597 has 2 manufacturer part numbers on file: 701664 (Viking Incorporated Dba Viking Inc), 701664 (Dresser, Llc).
Key specifications for 701664: Flange Shape: HEXAGON FIRST END; Nominal Width Across Flats: 0.625 INCHES FIRST END IN; Nominal Length: 0.312 MILLIMETERS FIRST END MM; Nominal Length: 0.594 MILLIMETERS ALL ENDS MM. 9 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.