Steel; casehardened; 2.358 in. Lg; 2 flanges 0.875 in. Od; 1st flange 0.150 in. Thk; 2nd flange 0.075 in. Thk; both flange faces ground finish; 1.395 in. Diameter between flanges; sleeve protrudes beyond smaller flange 0.520 in. Dia, 0.750 in. Lg, 0.375 in. Bore dia