C HEX DIA. DEPTH 1 1/16 10-32 .43 5/16 .052 .34 2 1/8 5/16-20 .60 7 ... 50 3 3/16 3/8-20 .64 1/2 .125 .54 4 1/4 7/16-20 .70 9/16 .187 .60 5 5/ ... 9/16-20 .76 11/16 .281 .67 8 1/2 3/4-20 .87 7/8 .406 .90 10 5/8 7/8-20 . ... 87 1 .500 .96 12 3/4 1-20 .87 1-1/8 .625 .96 14 7/8 1- ... 1/8-20 .87 1-1/4 .750 1.03 16 1 1-5/16-20 1.05 1-1/2 ... .875 1.24 20 1-1/4 1-5/8-20 1.52 1-7/8 1.09 1.61 24 1-1 ... /2 1-15/16-20 1.77 2-1/4 1.34 1.96 32 2 2-5/8-20 2.47 2-3/4 1 ... 1,7 12,9 3 3mm 5/16-20 15,3 12,0 2,4 12,9 4 4mm 3/8-20 16,1 12,0 2,4 ... 13,7 6 6mm 7/16-20 17,7 14,0 4,8 15,3 8 8mm 1/2-20 18,6 15,0 6,4 ... /8-20 19,5 18,0 7,9 17,2 12 12mm 3/4-20 22,0 22,0 9,5 22,8 14 14mm 7/8-20 ...