FRACTIONAL 3 Flute Countersink 60° 82° 90° 3 OAL LCF DCON DC2 DC1 603FRACTIONAL SERIES TOLERANCES (inch) inch EDP NO. 1/8–1/4 DIAMETER CUTTING SHANK OVERALL FLUTE TIP UNCOATED UNCOATED UNCOATED DC  = +0.0000/–0.0005 DIAMETER DIAMETER LENGTH LENGTH DIAMETER 60° 82° 90° DC2 DCON OAL LCF DC1 3/8–1 DIAMETER 1/8 1/8 1-1/2 .045 .040 – – 74225 DC  = +0.003/–0.000 1/8 1/8 1-1/2 .049 .040 – 74125 – Included Angle +1°/–1° 1/8 1/8 1-1/2 .078 .035 74025 – – 3/16 3/16 2 .071 .060 – – 74228 STEELS 3/16 3/16 2 .073 .060 – 74128 – STAINLESS STEELS 3/16 3/16 2 .123 .045 74028 – – 1/4 1/4 2 .090 .100 – – 74231 CAST IRON 1/4 1/4 2 .086 .100 – 74131 – HIGH TEMP ALLOYS 1/4 1/4 2 .156 .070 74031 – – TITANIUM *3/8 1/4 2-13/16 .138 .108 – – 74234 HARDENED STEELS *3/8 1/4 2-13/16 .154 .108 – 74134 – *3/8 1/4 2-13/16 .238 .100 74034 – – NON-FERROUS *1/2 1/4 2-7/8 .194 .122 – – 74237 *1/2 1/4 2-7/8 .217 .122 – 74137 – For patentinformation visit *1/2 1/4 2-7/8 .335 .113 74037 – – www.ksptpatents.com *5/8 3/8 3 .249 .138 – – 74240 *5/8 3/8 3 .280 .138 – 74140 – *5/8 3/8 3 .430 .128 74040 – – *3/4 1/2 3 .304 .153 – – 74243 *3/4 1/2 3 .343 .153 – 74143 – *3/4 1/2 3 .526 .143 74043 – – *1 1/2 3-1/4 .421 .168 – – 74246 *1 1/2 3-1/4 .479 .168 – 74146 – *1 1/2 3-1/4 .729 .158 74046 – – *Steel Shank / Con mango de acero / Avec queue en acier / Mit Stahlschaft NOTE: DC1 dimension varies based on angle. Contact your KSPT representative or consult SGS Tool Wizard® for dimension information. www.kyoceraD-sRgILsLtoSol.com DRILLS 319