1 12 unf 2a thread dimensions July 8, 2019 16 32 64 128 1 1 4 12 unf 2a thread dimensions 1 1 8 12 unf 2a thread dimensions 1 3/8-12 unf-2a thread dimensions Unf 1/2 thread 1-12 unf 2b thread 2 1/2-12 unf thread
