how to measure a nut
Measuring for Diameter. Lay the nut down as you did in Section 1. Set the end of the tape measure at one side of the inner threads of the nut. Stretch the tape measure to the other side of the inner threads of the nut.Count the lines to find the diameter of the threaded hole. Measure across the widest opening the threads make. This measurement will help you match the thread diameter of the nut with the thread diameter of the bolt.et the end of the tape measure at one side of the inner threads of the nut. Stretch the tape measure to the other side of the inner threads of the nut. Count the lines to find the diameter of the threaded hole. Measure across the widest opening the threads make.