1/2-13 x 1.000 hex black oxide bolts

1/2-13 x 1.000 hex black oxide boltsMaterial: 8740 Chrome Moly Finish: Black Material 2: Finish 2: Origin: USA

ARP has designed an extra heavy-duty shaft that will provide you with the necessary reliability

each stud is centerless ground to makeit as close to perfectly concentric as possible

Special ARP Pro Series NASCAR type stud kits have one of the studs drilled to facilitate sealing the carburetor in the engine by race officials

ARP has introduced a line of premium quality weld-in bungs

Made from ARP2000 and heat-treated to 220

That’s whythe fastener experts at ARP have developed special bolts that are far superior to OEM hardware

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

all ARP main bolts feature a reduced renching head

all ARP 12-point nuts are constructed from 8740 chrome moly steel or ARP Stainless

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

ARP main bolts are designed to meet the exacting standards and demands of professional engine builders

but the results are well worth the extra effort