The Flange,pipe, cataloged under National Stock Number 4730-01-063-4189, 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 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-063-4189 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange End Radius | 0.125 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Socket Depth | 0.188 INCHES NOMINAL IN |
| Tube Outside Diameter for Which Designed | 0.312 INCHES NOMINAL IN |
| Flange Section Style | PLAIN FACE, SOCKET NECK |
| Style Designator | OVAL, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.136 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN |
| Unthreaded Reducer Hole Diameter | 0.243 INCHES NOMINAL IN |
| Groove Depth | 0.050 INCHES NOMINAL IN |
| Flange Length | 1.250 INCHES NOMINAL IN |
| Reducer Flange Hole Type | CONCENTRIC |
| Recess Diameter | 0.325 INCHES NOMINAL IN |
| Groove Pitch Diameter | 0.582 INCHES NOMINAL IN |
| Bolt Hole Quantity | 2 |
| Bolt Circle Diameter | 0.500 INCHES NOMINAL IN |
| Flange Width | 0.812 INCHES NOMINAL IN |
| Groove Width | 0.102 INCHES NOMINAL IN |
| Thickness | 0.250 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 |
|---|---|
| 3206668 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-063-4189 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-063-4189: Flange End Radius: 0.125 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Socket Depth: 0.188 INCHES NOMINAL IN; Tube Outside Diameter for Which Designed: 0.312 INCHES NOMINAL IN. 18 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.