I am using different kinds of thread forms like, NPT, BSP, ACME, ASSA, BS WHITWORTH, ETC. When I use hole wizard for creating different sizes, I only get Metric ones like, M1, M2, ........ and some NPSM standard thread forms. However, there are forms like G1, #0-80, etc also which I don't know what they represent.

I am not familiar with this stuff, would like to get help on this matter.

Thanks in anticipation !