types of screw heads Secrets
Binding screws are a unique style of screw that you can use for A variety of tasks. These screws have a rather domed head and screw into each other with a male and feminine facet. flat head screwhex head screwlag screwsPhillips screw headRobertson screw headself-tapping screwsTorx screw head Some makers offer screws which has a serrated thread, w