The Flange,pipe, cataloged under National Stock Number 4730-01-685-2607, 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 13 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-685-2607 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Diameter | 6.625 INCHES NOMINAL IN |
| Nominal Pipe Size for Which Designed | 3.00 INCHES IN |
| Maximum Operating Temp and Media for Which Designed | 425.0 FAHRENHEIT WATER AND 425.0 FAHRENHEIT OIL AND 425.0 FAHRENHEIT GAS DEGF |
| Flange Section Style | PLAIN FACE, SOCKET BRAZING NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.688 INCHES NOMINAL IN |
| Material Document and Classification | ASTM B61 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE |
| Bolt Hole Quantity | 8 |
| Bolt Circle Diameter | 5.50 INCHES NOMINAL IN |
| Groove Outside Diameter | 3.613 INCHES MINIMUM AND 3.633 INCHES MAXIMUM IN |
| Bore Diameter | 3.286 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Thickness | 0.938 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 |
|---|---|
| M2004TYPRCL250,3.0NPS | 5/9 Secondary reference U.S. Government activity |
| M20042-PR250-0300 | 2/2 Government specification standardization U.S. Government activity |
| MIL-PRF-20042 | 4/1 Identification reference U.S. Government activity |
| MILF20042TYPRCL250,3.0NPS | 5/1 Secondary reference U.S. Government activity |
NSN 4730-01-685-2607 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-685-2607: Flange Diameter: 6.625 INCHES NOMINAL IN; Nominal Pipe Size for Which Designed: 3.00 INCHES IN; Maximum Operating Temp and Media for Which Designed: 425.0 FAHRENHEIT WATER AND 425.0 FAHRENHEIT OIL AND 425.0 FAHRENHEIT GAS DEGF; Flange Section Style: PLAIN FACE, SOCKET BRAZING NECK. 13 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.