8 x 3 Phillips Flat Head with Nibs Deep Thread Wood Screw Type 17 2/3 Thread Black Ox SNPP They have a hex washer

They have a hex washer head with an indented drive for increased torque and reduced cam-out

The screw has a 6-lobe pan head that provides a secure grip when driving

Additionally

This 2-28 x 3/8 6-Lobe Pan Plastite Alternative 48-2 Fully Threaded Zinc And Wax is a high-quality

The screw is 5/16 inches long and has a diameter of 2-32 inches

8 x 3 Phillips Flat Head with Nibs Deep Thread Wood Screw Type 17 2/3 Thread Black Ox SNPP They have a hex washerThese 8 x 3 Phillips flat head with nibs deep thread wood screws are made of steel and have a black oxide finish. They have a type 17 2 3 thread and are designed for use in wood applications. The screws have a flat head with a Phillips drive and a nibs point that helps to prevent splitting. They are 8 inches long and 3 inches wide.