Ymaterial 1.0 in. Dial-p-410 nylon 616 (mc6773-01); 1 in. Dia; 1 in. Lg; 0.266 diameter hole through center; center hole countersunk 1 end 0.4 in. Dia, 0.05 in. Deep; 4 holes each end 4-40unc-23, 0.33 min full thd, bolt circle diameter 0.72 both ends
