3/8in 8740 Black Oxide 12-pt Nut Kit

3/8in 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

The smart way to attach a float bowl is with ARP’s special

as well as protecting the threads in your engine block

rated at 190

You can choose between black oxide finished 8740 chrome moly or corrosion-resistant stainless steel

This is a premium steel that is processed to deliver superior strength and fatigue properties

Given the growth in extreme diesel competition and street add-ons

They’re forged from premium grade 8740 chrome moly steel and are heat-treated to a nominal rating of 190

Many professional engine builders prefer to use studs because of their ability to properly position the gasket and guide the cover into position

(inside diameter) chamfers

All Pro Series head bolts have areduced wrenching hex or 12-point head and wide area flange to permit the use of larger diameter valve springs and eliminate the need for valve train removal during cylinder head retorquing

All critical shear points feature a large radius for improved reliability and maximum load carrying capacity

Both are available in black oxide finished chrome moly steel or polished ARP Stainless