EndmillsSquareRadiusBallnoseMulti-PurposeGeneral-purposeHighEfficiencyHardene dSteelRoughingNon-ferrousMetalCFRPCoatedUncoated DC Stock DMM h5 DC DMM h5 GSX MILL 2 Flute Endmills Sharp Edge GSX 20000S-4D Type General CarbonSteelSteelAlloySteelPre-hardenedSteelTemperedSteel/Die SteelHardenedSteel45 to 55HRCHardenedSteel55 to 60HRCStainlessSteelTi Alloy /Heat ResistantAlloyCast Iron Corner Flutes Coat Helix Angle Side Milling Groove Finishing Fig 1 Fig 2 APMX LU 15° APMX LF LF DC Tolerance D ≤ 3.0 0 -0.015 I 3.0 < D ≤ 12 0 -0.02012.0 < D0-0.030 Body Dimensions (mm) Cat. No. Dia.DC Cutting Edge Length Neck Length Overall LengthAPMXLULF Shank Dia.DMM Fig GSX 20050S-4D ● 0.5 2.0 2.4 40 4 1 GSX 20100S-4D ● 1.0 5.0 6.0 40 4 1 GSX 20150S-4D ● 1.5 7.0 8.0 40 4 1 GSX 20200S-4D ● 2.0 9.0 10.0 40 4 1 GSX 20250S-4D ● 2.5 12.0 13.0 50 4 1 GSX 20300S-4D ● 3.0 12.0 13.5 50 6 1 GSX 20350S-4D ● 3.5 14.0 15.5 50 6 1 GSX 20400S-4D ● 4.0 16.0 17.5 50 6 1 GSX 20450S-4D ● 4.5 18.0 19.5 60 6 1 GSX 20500S-4D ● 5.0 20.0 22.0 60 6 1 GSX 20550S-4D ● 5.5 22.0 24.0 60 6 1 GSX 20600S-4D ● 6.0 24.0 ― 60 6 2 GSX 20650S-4D ● 6.5 26.0 28.0 70 8 1 GSX 20700S-4D ● 7.0 28.0 30.0 80 8 1 GSX 20750S-4D ● 7.5 30.0 32.0 80 8 1 GSX 20800S-4D ● 8.0 32.0 ― 80 8 2 GSX 20850S-4D ● 8.5 34.0 36.0 90 10 1 GSX 20900S-4D ● 9.0 36.0 38.0 90 10 1 GSX 20950S-4D ● 9.5 38.0 40.0 90 10 1 GSX 21000S-4D ● 10.0 40.0 ― 90 10 2 GSX 21050S-4D ● 10.5 42.0 44.5 100 12 1 GSX 21100S-4D ● 11.0 44.0 46.5 100 12 1 GSX 21150S-4D ● 11.5 46.0 48.5 100 12 1 GSX 21200S-4D ● 12.0 48.0 ― 100 12 2 GSX 21300S-4D ● 13.0 52.0 55.5 110 16 1 GSX 21400S-4D ● 14.0 56.0 59.5 120 16 1 GSX 21500S-4D ● 15.0 60.0 63.5 120 16 1 GSX 21600S-4D ● 16.0 64.0 ― 120 16 2 GSX 21700S-4D ● 17.0 68.0 72.5 130 20 1 GSX 21800S-4D ● 18.0 72.0 76.5 130 20 1 GSX 21900S-4D ● 19.0 76.0 80.5 140 20 1 GSX 22000S-4D ● 20.0 80.0 ― 140 20 2 GSX 22500S-4D ● 25.0 100.0 ― 160 25 2 Grade: ACF20 Endmill Identification (GSXMILL Series Only) GSX 2 0100 S - 4D Series Code Number Dia. Cutting Edge Cutting Edge of Teeth S: Sharp Edge Length I42