NEW STEP BY STEP MAP FOR TYPES OF SCREW HEADS

Many hold the similar features to be a Phillips screw head but an extra layer of safety that does not enable a Phillips screwdriver to use them. These screws are generally often called Robertson’s. They have square Middle stage which reduce them from stripping out. So, If you would like the screw heads to be flat against the surface area or sti

Breakaway head The breakaway head (also called breakoff or shear fastener)[70] is often a superior-security fastener whose head breaks off throughout installation, in the course of or promptly following the driving process, to depart merely a sleek surface. It typically is made of a countersunk flat-head bolt, with a thin shank and hex head protrud