Metallics JSTSP41 Screws 4-24 X 1/2 Pn Ph TS SS (Jar 100)
https://nsiindustries.com/product/4-x-1-2-in-pan-head-phillips-tapping-screws-18-8-stainless-100qty/
These pan head tapping screws cut their own threads into a material, but still rquire a pilot hole and are typically used in construction with a variety of materials.