Pdf 'link' - Asme B1864

As of , the ASME B18.6 subcommittee combined B18.6.4 (Tapping Screws) and B18.6.3 (Machine Screws) into a single document. Why? Over 50% of the content was identical.

Beyond the B1.20.1 / B16.4 confusion, consider these less likely but possible origins: