Matl steel per qq-s-634; 0.60 in. Min and 0.62 in. Max long; 5.172 in. Min and 5.178 in. Max outer radius; body 4.585 in. Min and 4.590 in. Max inner radius; ridge 5.062 in. Min and 5.068 in. Max inner radius; 8 holes 0.280 in. Min and 0.286 in. Max dia