Self-drilling screws can be easily identified by the point of the screw and are designed for a selection of purposes. Some of the key uses are fastening metal to metal & metal to wood.
To shorten installation time and lower the cost, self tapping screws do not require a pilot hole. This extra functionality and cost saving feature makes self-drilling screws the clear choice for metal building construction.
Self tapping screws are typically used for: metal construction & metal to wood.