Description
Pro series rocker arm studs are made from 8470 chromemoly steel and are heat-treated to 200/000 psi tensile strength. Studs are concentric within . 005 T. I. R. thread pitch to thread pitch / which gives you more consistent rocker geometry. Extra-large radius base / studs are more resistant to flex and will provide a more positive seating. Rocker arm studs were designed for use with Perma-Loc adjusters (not for use with OEM-style / self-locking nuts).
Since 1968, ARP is the fastener of champions and the world leader in fastener technology.
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