2.4300" overall length 2 0.3125-18unc-2b thd bolt holes located on 2.6250 in dia. bolt circle 180 deg apart on flange, 2 0.3400 in. dia. bolt holes located on 2.6250 in. dia. bolt circle 180 deg. apart on flange cadmium surface treated 22c solid, external flange one end