Nearly all screw head forms will possibly be flat on the top or on The underside. Most screws are flat on the bottom of your head (pan head; spherical head; truss head, etc….) Most of these are measured from The underside of the head to the idea. Flat head, https://how-to-remove-a-broken-sc67888.like-blogs.com/18381149/facts-about-how-to-remove-headless-screw-from-wood-revealed