Not known Factual Statements About types of screw heads
Hex head screws are click here a style of machine screw. they're not the same as Hex socket head screws because Hex head screws Have got a hexagonal shaped head and can only be tightened that has a wrench. there is not any interior socket as There may be with Hex socket shaped screws. often identified as a two-gap spanner, have a sharp concluded g