Drill Size Chart

[smoker]

I resized and brought together drill size charts and put them on one page. I print extra copies and hang them
on the work bench and drill presses and tap sets. Thought some of you might find it convenient.

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[merc_man]

Very handy indeed. I have a smaller chart. Saved yours to my phone. It has a lot more.

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[Al Smith]

Nice chart but now rule of thumb if you don't have a chart .Drop one thread spacing from the base size .For example 3/8" 16 .3/8" minus 1/16" would be 5/16" .1/4 " 20 would be .050 thread spacing which would be .200 .The closest drill would be a number 7 which is .207 .
SAE threads are given in threads per inch .Metric is in thread spacing for example M10 -1 would be M 9 tap trill .