The Flange,pipe, cataloged under National Stock Number 4730-00-470-6587, 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 21 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-470-6587 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Diameter | 4.250 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Tube Outside Diameter for Which Designed | 0.375 INCHES NOMINAL IN |
| Flange Section Style | RAISED FACE, RAISED NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.562 INCHES NOMINAL IN |
| Neck Height | 3.063 INCHES NOMINAL IN |
| Material Document and Classification | MIL-C-20159 MIL SPEC SINGLE MATERIAL RESPONSE |
| Groove Depth | 0.110 INCHES NOMINAL IN |
| Features Provided | O RING |
| Nominal Thread Size | 0.625 INCHES IN |
| Groove Pitch Diameter | 1.251 INCHES NOMINAL IN |
| Bolt Hole Quantity | 4 |
| Bolt Circle Diameter | 3.125 INCHES NOMINAL IN |
| Raised Face Diameter | 2.250 INCHES NOMINAL IN |
| Raised Face Height | 0.015 INCHES NOMINAL IN |
| Screw Thread Series Designator | UNF |
| Thread Class | 2B |
| Material | COPPER ALLOY |
| Groove Width | 0.188 INCHES NOMINAL IN |
| Thickness | 0.797 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 |
|---|---|
| 49651-79X01PC56 | 3/2 Design control — primary reference U.S. Government activity |
| 113-2663140 | D/9 Drawing number reference only U.S. Government activity |
| 49651-79X1 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-00-470-6587 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-470-6587: Flange Diameter: 4.250 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Tube Outside Diameter for Which Designed: 0.375 INCHES NOMINAL IN; Flange Section Style: RAISED FACE, RAISED NECK. 21 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.