Bolt Hole Circle Calculator
Bolt Hole Circle Calculator . 9 rows bolt hole pattern. Fill in the radius of bolt circle, r. App Shopper Bolt Hole Circle Calculator (Utilities) from appshopper.com Use these calculators to find the pcd (pitch circle diameter) of a series of holes if you have a very large pcd or an odd number of holes (where you cannot measure over opposing holes). Enter the number of holes, n. D 2max = d 2 + e s.