Re: Bolt Guys--Gear Heads Too
8.8 bolts are metric bolts. they are made from low or medium carbon steel, quenched and tempered. they have a tensile strength of 600 MPa. (mega pascals) they aren't always the same size. you could have the an 8.8 grade bolt and it could come in many sizes. as for your question, the rule of thumb is to use the same grade bolt that came out of it, or stronger. the bigger the number on it, the stronger the tensile strength is.
i knew those first semester notes would come in handy someday. i am in the automotive technician student at college, if you were wondering how i knew all this stuff....