Reliable Fasteners Hex with Washer Zinc-Plated Steel Screw - #12 x 2-in - Self-Tapping - Self-Drilling - 4 Per Pack

Give your ventilation ducts a secure hold using these Reliable hex self-drilling screws. Constructed with steel material, these screws withstand wear to last for years. A zinc coating protects the surface from rust and corrosion. They have a self-tapping thread that cut their own thread path through the attaching material. These hex washer, self-drilling screws use a socket hex that offers optimal torque power for fast installation. Designed with a fully coarse threaded shank, the screws have great grip strength. They resist galling and stripping to ensure a smooth performance. The split point on these hex self-drilling screws pierces through the material to save time spent pre-drilling pilot holes. With a TPI of 14, these screws are 5/16 in L x #12 dia. A box comes with four screws for interior and exterior use.