3D Model: An Orthographic Engineering Drawing Of A Mechanical Flange. The Front View Shows A Circular Plate With An Outer Radius Of R50 And A Central Square Opening With A Radius Of R30. The Total Width Is 104 Mm. The Plate Has Four Bolt Holes With A Diameter Of 10 Mm Each, Positioned With A Center-to-center Distance Of 32 Mm. The Side View Shows A Stepped Profile With A Central U-shaped Cutout Defined By Radii R10 And R16. The Vertical Dimensions Are 32 Mm And 21 Mm. The Model Should Be A Precise 3D Representation Based On These Dimensions.