ABOUT HEAD SCREW TYPES

Decking screws have tough threads and an excellent best shank, similar to wood screws. Also they are meant to face up to rust and corrosion, which is yet another aspect in common with wood screws.The Robertson head, AKA the square head, dates back to 1907. Common in copyright and long thought to be a curiosity within the U.S., it’s getting to be

The slotted profile was one of several pretty first screw heads and proceeds to love widespread reputation. A straightforward slot to the screw head retains the Resource blade.Thread whirling will involve clamping a steel rod inside a whirling head and tilting it to attain the desired helix angle. The whirling head then rotates the rod at superior