Steel; 3.875 in. O/a lg; 2.875 in. O/a h; shaftwelded to cam; 1.967 in. Diameter of shaft; 3.219 in. Lg of shaft; 0.625 in. Diameter ofunthd hole drilled through cam; 0.500 in. Recess at welded end of shaft; 1.650 in. Long threaded hole drilled into welded end of shaft; 1/8-27 npt for threadedhole; 0.375 in. Thick cam