... patterns. GaugeHolesCentersOpen Area %30.020".045"20%261/32"1/16"22%26.033".055" STRAIGHT29%243/64"3/32 ... "23%26.050".066" STRAIGHT52%26050"5/64"37% ... 3/32"40%22,261/16"7/64"30%20,181/16"1/8"23%22,205/641/8 ... 325/32"33%22.1175/32"51%26-111/83/16"40%20-165/32"3/16"63%24-143 ... 5/16"33%22-161/4"5/16"58%20-14,111/4"3/8"40%103/8"1 ... 2"51%18,16,113/8"9/16"40%20,16,14,111/2"11/16"48%113/4 ...