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
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Titanium Coated Wood Countersink Drill Bit Set, 1/4” Round Shank, 6#8#10#12#14 HSS for Screw Pilot Hole Drilling, 5Pcs : Amazon.co.uk: Business, Industry & Science
![wood - When pre-drilling for screws, how do you determine the correct bit diameter? - Home Improvement Stack Exchange wood - When pre-drilling for screws, how do you determine the correct bit diameter? - Home Improvement Stack Exchange](https://i.stack.imgur.com/VOtay.png)