TYPES OF SCREW HEADS - AN OVERVIEW

you can find much more heads that are available, but all can be a variation or mixture of these adhering to basic designs: flat head screwhex head screwlag screwsPhillips screw headRobertson screw headself-tapping screwsTorx screw head Some manufacturers present screws with a serrated thread, which permits the thread to cut by the fabric becoming

The square form from the recess permits a more secure in good shape and cuts down the chance of harm to the screw head. This kind is usually present in roofing bolts together with other in the identical way priced items that Have a really thread that is unquestionably at the least 5 mm (0. Flat screw heads are countersunk, which means they sit to