Description 40% Glass Filled Isoplast Flange Nuts Thread Size A B C D E Quote 3/8-16 .635 .555 .745 .750 .120 1/4-20 .500 .430 .590 .590 .100 1/2-13 .840 .730 1.000 .855 .130 5/8-11 1.050 .920 1.250 1.220 .130 3/4-10 1.285 1.120 1.500 1.590 .130 1-8 1.750 1.475 2.000 1.750 .188