2.437" outside diameter two additonal holes on 1.875 in. dia bolt circle 0.1562 in. dia; 63.0 microin finish on cbore dia phosphate manganese surface treated round
the item is coated with a drying type preservative oil conforming to DWG1603000; a second set of bolt holes consisting of 0.250-20unc-3b-bottom tap number 4 (209) drill 0.650 inch deep plus 0.31 phosphate manganese surface treated square
10.658" outside diameter item is 90 deg segment of plate; key 0.500 in. min to 0.502 in. max w, 1.055 in. dp; additional hole 0.070 in. min to 0.073 in. max thru oxide surface treated