PART SERIES SERIES 12Y1N (21MM) PINADRETXSAEBRLIESTHREAD MILLS aIpnpt.liTcahtrieoand1 aEpxptl.icTahtrioenad2 apCploicoaltaionnt 3 application 4 application 5 application 6 application 7 D3 D1 D2 a L2 L1 L1 L2 D2 Overall Extension No. of Cutter Number a D1 Shank D3 Length Length Flutes 12Y1N-0701684R01 0.827 0.790 0.750 0.610 3.700 1.570 1 12Y1N-0903084R01 0.827 0.940 0.750 0.610 5.000 1.570 1 12Y1N-1102080R01 0.827 1.180 1.000 0.950 4.250 1.970 2 Operating guidelines on page 700. 562