Pick the right drill bit size for a 3/8 pipe tap
If you're standing in the garage wondering what size drill bit for a 3 8 pipe tap you need to grab, the short and sweet answer is 9/16 inch. That's the standard for NPT (National Pipe Taper) threads, which is what you're likely dealing with if you're working on plumbing, air lines, or automotive fittings. ...