The Adapter,straight,flange to Pipe, cataloged under National Stock Number 4730-00-537-2890, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-537-2890 |
| Item Name | Adapter,straight,flange to Pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Shape | OVAL WITH HOLES SECOND END |
| Flange Face Design | PLAIN SECOND END |
| Connection Style | PLAIN (PIPE) FIRST END |
| Nominal Length | 2.734 INCHES SECOND END IN |
| Bolt Circle Nominal Diameter | 2.062 INCHES SECOND END IN |
| Nominal Overall Length | 1.312 INCHES IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Bolt Hole Nominal Diameter | 0.272 INCHES SECOND END IN |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Bolt Hole Quantity | 2 SECOND END |
| Nominal Width | 1.656 INCHES SECOND END IN |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | NPT FIRST END |
| Nominal Thickness | 0.344 INCHES SECOND END IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 8505728 | 3/9 Design control — primary reference General Motors Corp Harrison Radiator Div |
| 8505728 | 5/9 Secondary reference General Motors Corp |
NSN 4730-00-537-2890 is a Adapter,straight,flange to Pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-537-2890: Flange Shape: OVAL WITH HOLES SECOND END; Flange Face Design: PLAIN SECOND END; Connection Style: PLAIN (PIPE) FIRST END; Nominal Length: 2.734 INCHES SECOND END IN. 15 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.