Hello Eric if I go after the ANSI table I have 20 threads per inch.
1 inch is 25.4mm. If I devide 25.4mm/ 20thread I get the slope 1.27mm per thread. Am I correct.
That 2.25 in is the lenght.
Than should be this the correct thread.
Thanks for your help.
7/16" - 20 UNF 0,438 11,112 9,90 20 1,270