... 1/20.6882 15/16NC 26 (2 3/8 IF)3 3/81 1/2Standard17.263,8002 7 ... 1/20.6882 15/16NC 26 (2 3/8 IF)3 3/81 1/2Spiral18.313,8003 1 ... 22 1/40.6253 7/8NC 38 (3 1/2 IF)4 3/42 1/4Spiral24.8811,50042 9/160 ... .7194 3/16NC 40 (4 FH)5 1/42 9/16Standard29.9214,60042 9/160.7194 3/16NC ... .8754 11/16NC 46 (4 FH)6 1/42 13/16Standard41.4514,6004 1/22 3/40.8754 ... 0006 5/84 1/21.0636 15/166 5/8 FH84 1/2Standard71.4363,7006 5/84 1/ ...