ARP Fasteners - 12Point Bolts - 0 - 0 UNIVERSAL NON APPLICATION SPECIFIC ALL ALL ALL ; - 656- 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. What's more, you can't beat the gorgeous looks of ARP's specially polished stainless steel fasteners, and their ability to resist rust. They're truly maintenance free! You can get 5-packs (washers included) of any diameter bolt from 1/4? to 1/2? or M6 to M12 in lengths ranging from 1/2? to 6?, with ARP12-point heads. Matching nuts are also available