Screw Type: Cap Screw; Dry Wall Screw; Lag Screw; Machine Screw; Self Drilling / Thread Cutting Screw; Shoulder Screw; Tamperproof Screw (optional feature); Wood ...
A screw is a type of hardware fastener that attributes its mechanical capabilities to the helical groove that extends around the circumference of the device's shank. These threads provide the friction ...