1. Create new part, sketch egg shape on top plane using spline .
2. Extrude shape to 0.3in , click top face and right click Insert Sketch.
3. Select part edge and click offset to 0.3in . Exit Sketch .
4. Click hole wizard , select Countersink, Ansi Inch, Flat Head Screw, #10, Normal, Through All . Click Positions , click screw point at curve edge. OK.
5. Select CSK for #10 Flat Head Machine Screw , Click Insert>Pattern/Mirror>Curve Driven Pattern… Define Pattern, select spline sketch and set # to 10, Equal spacing . OK, done.