STM No Keyway Width Tooth Pitch Overall Height at Teeth Body Width Broach Length2028 116 38 38 316 162037 332 38 38 316 162046 18 38 716 316 162055 532 38 12 532 162064 316 38 916 316 162073 14 38 34 14 162082 14 38 34 14 202091 516 38 78 516 162100 516 38 78 516 202109 38 1732 78 38 162118 38 1732 78 38 202127 716 1732 1 716 202136 12 1732 1 12 202145 916 1732 1 916 202154 58 1732 1 58 202163 34 1732 1 34 202172 78 1732 1 78 202181 1 1732 1 1 20