Original problem how pilot hole size for self tapping screws Cook sour Labe
What Drill Size Should I Use For Self Tappers | Drill Sizes
Self-Drilling vs Self-Tapping Screws: What's the Best Fastening Solution?
Self-Tapping Screws Guide | RS
Is there a chart showing the proper pilot hole for sheet metal screws? I know, or think I know, 1/8' for a #8 screw, but what about #4, #6,#10, #12? - Quora