"9STEEL ASTM A108 GRADE 1018,W/SHOULDER1.250 IN. DIA 0.380 IN. THK,SHANK 5.500 IN. LG 0.927 IN. DIA W/0.125 IN.MIN 0.140 IN. MAX COTTER PIN HOLE 0.380 IN. FROM END OF PIN,LOOP 0.188 IN.DIA ON SHOULDER OF PIN,PIN CONNECTED TO PUSHING KNEE W/STEEL CHAIN"