The head of the screw may be the area where it'll quit outside the surface of your project/product. Each individual screw head serves a different purpose and is particularly meant to be employed for particular applications or materials. The "8" stands for the gauge, and eight is a reasonably regular https://types-of-roof-valley74062.affiliatblogger.com/81625653/not-known-details-about-types-of-screw-heads-diagram