Stainless #10 x 1 Philips Pancake Head Self Drilling Sheet Metal Tek Screws With Drill Point, 410 Stainless Steel, Self Driller (25) Pancake Head style is engineered to prevent damage to material being held. Tensile - 180,000 psi, Hardness - 40 Rockwell C Type BSD is a tapping screw with spaced threads and a drill point which drills its own hole #3 Drill Point 25 Pieces