Matl steel per ams 5355; 1.045 in. Long; body 1.5000 in. Min and 1.5005 in. Max od; flange 1.71 in. Min and 1.73 in. Max od with 6 tabs; bore 1.20 in. Min and 1.21 in. Max dia; counterbore 1.33 in. Min and 1.35 in. Max dia; 3 holes 0.144 in. Min and 0.155 in. Max dia; 3 holes 0.23 in. Min and 0.25 in. Max dia