The basis diameter could be the shank alone that is certainly beneath the thread. The inner groove of the thread reaches the basis diameter from the shank. You can think about this as the equal of the core diameter in the threaded gap. You will discover a few steps in https://stainless-steel-banding-s16307.blogolenta.com/27439725/5-tips-about-woodscrews-you-can-use-today