I used these, https://www.amazon.com/gp/product/B0829N3J8R/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

which are 1600 in marlin and rotation_distance: 2 in klipper

2mm per full rotation so if 1 full rotation can be broken down in to 200 microsteps 2mm/200 = 0.01 mm per step

I might be off on my microsteps for a 1.8 degree stepper,

Also I do not use the backlash nuts, with 1 start and 2mm lead doesnt drop on its own