PART SERIES SERIES 12Y1U_D (40MM) PINADRETXSAEBRLIESTHREAD MILLS - SHELL MILL aIpnpt.liTcahtrieoand1 aEpxptl.icTahtrioenad2 application 3 application 4 application 5 application 6 application 7 D2 L1 a D1 D2 L1 No. of Cutter Number a D1 Pilot Height Flutes 12Y1U-31023D3R01 1.575 3.150 1.000 2.360 4 12Y1U-39027D4R01 1.575 3.940 1.250 2.760 4 Operating guidelines on page 700. 576