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For a cut tap the correct drill size is a #17 drill, which has a diameter of .173 inches.

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Q: What is the drill size for 8-32 sti tap?
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What size drill bit for a three quarter tap?

2,3mm


What drill bit size for .125 in. national pipe thread?

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How do you determine the drill size for tapped holes?

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What diameter is a 12 24 tap drill?

Common references list the tap drill for a #12-24 screw as #17 or .173"


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How can you get a stripped screw off?

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What size drill bit should you use to drill a hole that is threaded for a 1by4-20 UNC bolt?

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What is the name of the drill bit used before drilling the main hole?

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