ABOUT TYPES OF SCREW HEADS

they supply far more stability to the applied force as compared with the Phillips screws. The distinction between a Phillips screw and also a posidriv might be discovered by searching them from side. there are actually ribs concerning all the 4 arms on the posidriv and are marked by ‘pz’. Flat Head levels. Flathead screws have different degree

A U-travel screw includes a helical thread by having an angle acute plenty of to get pushed by a hammer or strain from an arbor push, and so includes a domed head without usually means of turning it.[ninety] These are most often pushed into plastics using a pre-drilled pilot hole. See also[edit] The pinnacle peak is about fifty percent its diamete