The Definitive Guide to screw heads types for sale
You will also require a plastic wall-plug to anchor the screw. Drill the opening the precise width and depth on the plug and then insert the screw. Sq. head bolts are just like hexagonal-formed cap screws, apart from they have a 4-sided square head as opposed to a 6-sided hex head. This sq. head allows for a safer wrench grip all through fastening