Now you can use premium quality ARP stainless steel or chrome moly fasteners to install most anything on a car, boat or trailer The specially alloyed ARP 300 stainless steel and heat-treated 8740 chrome moly bolts (black oxide finish) are nominally rated at 180,000 psi tensile strength to provide a substantial extra margin of safety over grade 8 hardware Whats more, you cant beat the gorgeous looks of ARPs specially polished stainless steel fasteners, and their ability to resist rust Theyre truly maintenance free You can get 5-packs (washers included) of any diameter bolt from 14 to 12 or M6 to M12 in lengths ranging from 12 to 6, with ARP12-point heads Matching nuts are also available Standard Hex Bolt 5Pieces Material Black Oxide Size 516-18 x 1 Wrenching 38