3 8 16 July 8, 2019 16 32 64 128 3 8 16 minor diameter 3 8 16 thread 3 8 16 unc tap drill size 3 8 16 inch to mm 3 8 16 tap drill size 3 8 16 bolt 3 8 16 unc 3 8 16 tap 3 8 16 drill size 3 8 16 thread dimensions 3 8 16 unc thread dimensions 3 8 16 unc drill size Nut 3/8 16 3 8 16 helicoil 3 8 16 screw