They provide much more stability for the utilized pressure when compared with the Phillips screws. The distinction between a Phillips screw as well as a posidriv is usually discovered by wanting them from aspect. you will find ribs involving the many four arms in the posidriv and they are marked by ‘pz’. You should utilize a Robertson’s bit

"As an impartial Distributor, ASAP Semiconductor LLC, just isn't affiliated While using the producers with the merchandise it sells except as expressly mentioned otherwise. Any and all trademark legal rights linked to the makers names and solutions are owned with the respective brands." This kind is frequently existing in roofing bolts and also ot