What size drill bit is used for a 4 40 tap?
What size drill bit is used for a 4 40 tap? Tap and Drill Size Chart THREADSIZE DRILL DIAMETER Coarse Thread TAP DRILLSIZE 1-64 .0595 No. 53 2-56 .0700 No. 50 3-48 .0785 No. 47 4-40 .0890 No. 43 What size drill bit is a number 4? Drill sizes to Read more…