7/16in 8740 Black Oxide 12-pt Nut Kit

7/16in 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

in conjunction with aftermarket I-beam rods

as well as protecting the threads in your engine block

The threads are rolled after heat-treating which gives them about 2000% better fatigue strength than most main bolts that are threaded prior to heat-treating

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

A sample chart is as follows: ARP offers a highly accurate stretch gauge with a dial indicator that reads in increments of

and monitor overall length during installation

has been applied

This helps prevent blown head gaskets

making it ideal for the pplication

the adjuster body is heat-treated all the way through (not just case hardened)

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

Build up an inventory of these premium quality washers so you won’t get caught short when the need arises