05-01-13, 04:35 PM
The head of the bolt is wider than normal and therefore spreads the load better. Generally a bolt without a washer retains its torque better than a bolt with a washer. This is why many automative bolts are flanged and are used without flat washers.
I was not advocating stainless steel, it just happened to be the best picture I had to show the correct bolts.
I was not advocating stainless steel, it just happened to be the best picture I had to show the correct bolts.