NOT KNOWN FACTS ABOUT TYPES OF SCREW HEADS NAMES

Generally puzzled with a hex bolt, However they’re not the exact same. A hex bolt takes advantage of a nut, whilst a hex head cap screw is put in within a tapped gap. Straightforward switch the head to tighten. They’re offered with or without a slotted drive.There exists a triple sq. generate that have three robertson’s squares which form 12-