What is the difference between self-tapping and self-drilling screws? - Fastener Engineering
Hexagon Flange Head Self Tapping Screw Form C
Screw for Wood to Metal and Roofing Series | BDN Fasteners
Amazon.com: #8 x 1/2" Pan Head Self Drilling Screws, Phillips Drive Self Tapping Screws, Sheet Metal Screws, 410 Stainless Steel, Full Thread with Drilling Point, No Pre-drilled Needs, 100 pcs : Industrial