7/16-20 x 5.000 12pt black oxide bolts

7/16-20 x 5.000 12pt black oxide boltsMaterial: 8740 Chrome Moly Finish: Black Material 2: Finish 2: Origin: USA

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

As the crankshaft flexes and twists

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

This procedure ensures complete heat penetration and the resultsare far superior to those lesser quality studs from other manufacturerswho just dump pieces in a basket and hope for the best

dual metering block Holley and Carter AFB applications

There are many important reasons to use ARP main stud kits

This is “insurance” that no conscientious engine builder should be without

Dodge/Cummins and Ford Power Stroke engines are all assembled using “Torque To Yield” (TTY) bolts and preloaded to yield and beyond (typically 100-110%)

Available in choice of black oxide finish chrome moly or corrosion resistant stainless steel

impervious to corrosion

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