LITTLE KNOWN FACTS ABOUT WOOD SCREWS.

There are 2 sorts of hex screws: An Allen screw has a hexagonal indent in the head, necessitating an Allen wrench, and the opposite form has no indent in the hexagonal head and has to be utilized or taken off which has a socket wrench.The size of these screws may differ, but most drywall screws have flat heads that are made to countersink slightly