May seem stupid but i bought these and cut my own threading: https://www.amazon.com/gp/product/B07M7D87NV/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1
I wanted the standoffs to be black (Not Brass) and metal so that the motherboard screw grounds would function properly, only black standoffs i could find pre-threaded were Nylon.