All cup rocker screws have a 5/32" radius (5/16" diameter) cup and include an oil hole

Jam nuts sold separately

Cup Rocker Screws

Thread Type



    Smith Bros. Pushrods

    2895 SW 13th St.

    Redmond, OR 97756


    Fax 541-389-8840

    We’ve been crafting custom pushrods since 1953. We build superior quality pushrods for performance cars, trucks, motorcycles, tractors, restoration and custom projects.  Our pushrods can be found in many NASCAR performance engines and in your everyday driver.