pdf size tap unf unf tap drill size chart pdf Threads inches Drill size 0-80 UNF 80 0600 0519 0447 0465 364 1-64 UNC 64 0730 0629 0538 0561 54 2-56 UNC 56 0860 0744 0641 0667 … Friday, April 15, 2022 Edit