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Bolt Circle Calculator

 Calculator Menu

Enter values below to calculate the coordinates of the holes in a bolt circle.

Number of Holes N
Diameter of Bolt Circle D   in  mm
Diameter of Holes d 
Angle of First Hole A  degrees
Offset of Center X     Y 
 
 
Sensitive Drill Feed and 1/8" (3 mm) Keyless Drill Chuck
Sensitive Drill Feed and 1/8" (3 mm) Keyless Drill Chuck
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