The Flange,pipe, cataloged under National Stock Number 4730-00-289-8137, 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 20 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-289-8137 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Socket Diameter | 1.950 INCHES NOMINAL IN |
| Flange Diameter | 7.000 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 1.500 INCHES IN |
| Socket Depth | 0.625 INCHES NOMINAL IN |
| Maximum Operating Temp and Media for Which Designed | 975.0 CELSIUS STEAM DEGC |
| Operating Pressure and Type | 1500.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Flange Section Style | RAISED FACE, SOCKET NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 1.125 INCHES NOMINAL IN |
| Neck Height | 0.500 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-18410,CLASS A MIL SPEC SINGLE MATERIAL RESPONSE |
| Departure From Cited Designator | AS MODIFIED BY MATERIAL AND 1.500 IN. DIA BORE,FORUSE WITH SCHEDULE 80 PIPE IN |
| Nondefinitive Spec/std Data | 28 TABLE AND 29 TABLE |
| Bolt Hole Quantity | 4 |
| Bolt Circle Diameter | 4.875 INCHES NOMINAL IN |
| Raised Face Diameter | 2.875 INCHES NOMINAL IN |
| Raised Face Height | 0.250 INCHES NOMINAL IN |
| Material | STEEL |
| Thickness | 1.250 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 |
| Reference | Meaning |
|---|---|
| ASAB16-5 | 5/9 Secondary reference U.S. Government activity |
| B16-5-1961 | 3/1 Design control — primary reference U.S. Government activity |
| ASAB16-5 | 3/1 Design control — primary reference Deval Life Cycle Support Llc |
| ASAB16-5 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-00-289-8137 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-289-8137: Socket Diameter: 1.950 INCHES NOMINAL IN; Flange Diameter: 7.000 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 1.500 INCHES IN. 20 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.