The Flange,pipe, cataloged under National Stock Number 4730-01-683-7331, 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 7 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-683-7331 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Diameter | 2.0 INCHES NOMINAL IN |
| Flange Width Across Flats | 6.00 INCHES NOMINAL IN |
| Flange Section Style | PLAIN FACE (BLIND) |
| Style Designator | ROUND, TWO BOLT HOLE CIRCLES |
| Material Document and Classification | ASTM B16.5 ASSN STD SINGLE MATERIAL RESPONSE |
| Material | COPPER ALLOY |
| Thickness | 0.75 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 |
|---|---|
| ASTM,B16.5 | 5/1 Secondary reference The American Society of Mechanical Engineers |
| B16.5,2IN,NICU,CLA,600PSI | 3/1 Design control — primary reference The American Society of Mechanical Engineers |
NSN 4730-01-683-7331 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-683-7331: Flange Diameter: 2.0 INCHES NOMINAL IN; Flange Width Across Flats: 6.00 INCHES NOMINAL IN; Flange Section Style: PLAIN FACE (BLIND); Style Designator: ROUND, TWO BOLT HOLE CIRCLES. 7 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.