Making allen bolts for a project and unable to find the thread option
hit the thread button up top
3 Simple steps.
I have last years 2011 engineering hand book in PDF format
very Interesting book and worth its weight in gold from what you can learn from it everything you need to know and also has a very large section all about screws. bolts, nuts, thread sizes and on and on if you would like a copy E-mail me @ email@example.com and I shall send it your way for education purposes only.