ARP Rocker Arm Nut - 7/16-20 in Thread - 0.600 in Shank Diameter - 1.200 in Long - Chromoly - Black Oxide - Aluminum Rockers - Set of 16 H77403FXL Aircraft alloy aluminum

Aircraft alloy aluminum

Vehicle Applications: 2007-2013 Chevrolet / GMC GM/GMC Truck/SUV 900 Series

2014-2015 Infiniti QX50

Black Aluminum For Corrosion Resistance/Long Lasting Good Looks

1967 Mercury Brougham

ARP Rocker Arm Nut - 7/16-20 in Thread - 0.600 in Shank Diameter - 1.200 in Long - Chromoly - Black Oxide - Aluminum Rockers - Set of 16 H77403FXL Aircraft alloy aluminumA rocker arm adjuster that doesn't require special tools and won't work loose. Threads on the heat treated Perma Loc Adjusters are machined exactly perpendicular to the adjuster bottom. a set screw is also machined flush on the bottom. All of these features help eliminate setting valve lash on a regular basis. Since 1968, ARP is the fastener of champions and the world leader in fastener technology. Product Description: Rocker Arm Nut 7 16 20 in Thread