3.8120" overall length flycut 0.5000 in. radius by 0.1875 in. w. at end of keyway, left end of bore counterbored 2.0620 in. min. 2.0640 in. max. dia. by 0.2500 in. deep 17c solid, plain, no outside flanges
3a thread class right-hand 4.1730" overall length 0.8120" bore diameter keyway in shank; threads coated with solid dry film lubricant; shank hollow ball type