This is a simple 10mm x 22mm bolt that I've made for a project I am working on, building my own personal library for future use on projects, but thought it could be helpful to upload for others to use, The settings I'm using while printing this bolts are ironing on the top most surface for a smoother end of the bolt, I print on a texture pei for some added grip on the bolt head, and gyroid infill, this model does not require supports. I've printed this in PLA and PLA+, and have not tried any other materials. For some projects where you expect a little more torque I would suggest increasing the infill to 100%! Lastly I recommend scaling the part down to 95%