2 56 thread dimensions July 8, 2019 16 32 64 128 2 56 unc thread dimensions 2 56 unc 2b thread dimensions 2 56 internal thread dimensions 2 56 sti thread dimensions 2 56 external thread dimensions 2 56 unc 2a thread dimensions 2-56 thread 2-56 thread size 2-56 thread diameter 2-56 thread size in metric
