The Flange,pipe, cataloged under National Stock Number 4730-00-834-7220, 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 20 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-00-834-7220 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Diameter | 3.792 INCHES MINIMUM AND 3.832 INCHES MAXIMUM IN |
| Face Seating Surface Condition | GROUND |
| Surface Treatment Document and Classification | PD3330 MFR REF SINGLE TREATMENT RESPONSE |
| Boss Bevel Angle | 60.0 DEGREES NOMINAL |
| Flange Section Style | PLAIN FACE, BEVELED RAISED NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.562 INCHES NOMINAL IN |
| Bevel Depth | 0.125 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-867,CLASS 1 MIL SPEC SINGLE MATERIAL RESPONSE |
| Nominal Thread Size | 1.063 INCHES IN |
| Reducer Flange Hole Type | CONCENTRIC |
| Bolt Hole Quantity | 4 |
| Bolt Circle Diameter | 2.673 INCHES MINIMUM AND 2.703 INCHES MAXIMUM IN |
| Screw Thread Series Designator | UN |
| Surface Treatment | PASSIVATE |
| Thread Class | 2B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL |
| Neck Diameter | 1.750 INCHES NOMINAL IN |
| Thickness | 0.500 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 |
|---|---|
| 4400B1465 | 3/2 Design control — primary reference U.S. Government activity |
| 4400B1465 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-00-834-7220 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-834-7220: Flange Diameter: 3.792 INCHES MINIMUM AND 3.832 INCHES MAXIMUM IN; Face Seating Surface Condition: GROUND; Surface Treatment Document and Classification: PD3330 MFR REF SINGLE TREATMENT RESPONSE; Boss Bevel Angle: 60.0 DEGREES NOMINAL. 20 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.