The Lindow-White Thread Calculator was designed to help you determine the size of your female recess. You only need to provide two inputs; the size of your mail tenon and the threads per inch that you will be using. Once you enter these values and press the calculate button, we will provide you with your female recess size.

Click here to see how it works and check out the threading chart

Enter the outside diameter of your male tenon (in decimal):  

Select the Threads Per Inch (TPI)::   4 8 12 16 24 32 36 48