Ensure your projects are completed with high quality fastenings from Hard-To-Find Fastener. These grade 8 course threaded hex bolts are ideal for automotive, industrial, and heavy machinery projects requiring maximum fastening security. Designed with a course thread for a more secure attachment between pieces, these large bolts feature a hex cap that allows for greater torque application than circular caps. The greater diameter of these steel hex bolts allows for stronger, more heavy-duty load bearing across the join. Not all fasteners are applicable for all applications so be certain to test thoroughly and get the opinion of a licensed building or certified building or structural engineer before relying on these fasteners for any situations where failure would result in damage to property or person.