9/16in 8740 Black Oxide 12-pt Nut Kit

9/16in 8740 Black Oxide 12-pt Nut KitAvailable in a variety of sizes to suit your needs, all ARP 12 point nuts are constructed from 8740 chrome moly steel or ARP Stainless, and meet ARPs highest standards of quality. Rated at 180,000 psi tensile strength, ARP 12 point nuts are manufactured in thick wall versions for optimum strength and rigidity and thin wall versions for applications with limited space requirements. All 8740 chrome moly steel nuts are black oxide finished and all ARP

premiumgrade aerospace chrome moly steel

Made of corrosion resistant stainless steel

which gives themabout 2000% (that’s twenty times) better fatigue strength thanthose studs that are threaded prior to heat-treat (a very commonindustry practice)

It is for good reason that virtually every top professional enginebuilder relies on ARP Pro Series head studs for their all-out competitionpowerplants

Now available for all popular applications

Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for theadditional compression of gaskets

unique oil pan studs

ARP has developed special pressure plate bolts that are applicationspecific to ensure the optimum grip length

insulated plastic carrying case for protection

There are several important reasons why ARP’s exclusive Perma-Loc rocker arm adjusters won’t loosen like others

Simply stated

000 psi forthe 8740 material and 220