The Flange,pipe, cataloged under National Stock Number 4730-01-101-6883, 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20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-101-6883 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Socket Diameter | 0.437 INCHES NOMINAL IN |
| Flange Diameter | 3.125 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Socket Depth | 0.109 INCHES NOMINAL IN |
| Flange Section Style | RAISED FACE, SOCKET NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.187 INCHES NOMINAL IN |
| Neck Height | 0.191 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-763,CLASS 316,COND A FED SPEC SINGLE MATERIAL RESPONSE |
| Nominal Thread Size | 0.438 INCHES IN |
| Bolt Hole Quantity | 16 |
| Bolt Circle Diameter | 2.812 INCHES NOMINAL IN |
| Raised Face Diameter | 2.125 INCHES NOMINAL IN |
| Raised Face Height | 0.025 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN |
| Screw Thread Series Designator | UNF |
| Surface Treatment | PASSIVATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING |
| Thickness | 0.250 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 |
|---|---|
| 875-B-1106 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-101-6883 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-101-6883: Socket Diameter: 0.437 INCHES NOMINAL IN; Flange Diameter: 3.125 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Socket Depth: 0.109 INCHES NOMINAL IN. 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.