The Flange,pipe, cataloged under National Stock Number 4730-01-131-6009, 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18 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-131-6009 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Socket Diameter | 2.375 INCHES MINIMUM AND 2.380 INCHES MAXIMUM IN |
| Flange Diameter | 5.562 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 2.000 INCHES IN |
| Maximum Operating Temp and Media for Which Designed | 150.0 FAHRENHEIT GAS AND 150.0 FAHRENHEIT OIL AND 150.0 FAHRENHEIT WATER DEGF |
| Operating Pressure and Type | 700.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 700.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 700.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Flange Section Style | PLAIN FACE, SOCKET BRAZING NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.687 INCHES NOMINAL IN |
| Neck Height | 1.374 INCHES NOMINAL IN |
| Groove Depth | 0.108 INCHES MINIMUM AND 0.113 INCHES MAXIMUM IN |
| Groove Pitch Diameter | 2.812 INCHES NOMINAL IN |
| Bolt Hole Quantity | 6 |
| Bolt Circle Diameter | 4.438 INCHES NOMINAL IN |
| Bore Diameter | 2.121 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Groove Width | 0.188 INCHES NOMINAL IN |
| 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 |
|---|---|
| 810-1385947 | D/9 Drawing number reference only U.S. Government activity |
| 810-1385947 PIECE 2 2IN | 3/2 Design control — primary reference U.S. Government activity |
| 506-4676496 PIECE F1 | 5/2 Secondary reference U.S. Government activity |
NSN 4730-01-131-6009 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-131-6010. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-131-6009: Socket Diameter: 2.375 INCHES MINIMUM AND 2.380 INCHES MAXIMUM IN; Flange Diameter: 5.562 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 2.000 INCHES 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.