20 thread quantity per inch three additional holes on 2.562 in. bolt circle dia 0.279 in. min to 0.289 in. max dia; over all od 3.062 in., flatted on two sides; 63.0 microin finish on id of mounting holes; four additional holes 0.186 in. in to 0.193 in. max dia, equally spaced radially anodize surface treated unc thread series
3.250" outside diameter 24 thread quantity per inch three bolt holes equally spaced dia thru of 0.214 min. phosphate manganese surface treated round unc thread series
2.187" outside diameter two bolt holes on a 1.750 in diameter bolt whole circle; the bolt hole diameter is 0.156 thru phosphate manganese surface treated round
2.187" outside diameter a second set of two bolt holes are on a bolt hole circle with 1.750 in. dia; the bolt hole dia. is 0.169" in dia thru phosphate manganese surface treated round
4.625" outside diameter 2 additional threaded mounting holes, 0.3125 in. dia; groove outside dia, 0.187 in. min, 0.197 in. max w by 0.2205 in. deep anodize surface treated round
