Help with threads

Hello, I am trying to model a stud to test on my car. I want the stud to be 12x1.75mm, but I cant get the threads to start and end at the correct space.

https://cad.onshape.com/documents/9d292538ebe979f87628cb4b/w/9dc8bd52d6aa4c93d854f9e8/e/c96fa806a700dd569bb85830?renderMode=0&uiState=6941cd3748fa975cb4c7d939

Below is an example of what I'm trying to make, but I am making mine 56mm in total length.

37600-002jpg.jpg

Answers