G1 thread size July 8, 2019 16 32 64 128 G1 thread size chart G1 thread size in mm G1 2 thread size G1 4 thread size G1 thread drill size G1 8 thread size G1 2a thread size G1 8 thread hole size G1 4 thread size chart G1 thread hole size G1 2 male thread size G1 4 thread drill size G1 4 thread hole size