ARP 300-8242 Rocker Arm Nut Kit
- Manufactured to high tolerances so they run-in straight and true, and the extra-large radius base offers greater resistance to flex.
- Lengths are exact, designed to provide positive seating every time.
- Made from premium grade 8740 chrome moly steel and heat-treated to a tensile strength of 200,000 psi.
- Stud dimensions are: 1.750 overall stud height, .800 screw-in thread depth, .850 adjuster thread depth, 7/16-20 shank diameter and thread, and 7/16-14 base diameter and thread.
- Designed for use with ARP's patented Perma-Loc adjusters, not OEM-style self-locking nuts.