SQUAREBALLRADIUSTAPERCHAMFERROUGHINGEXCHANGEABLE HEAD END MILLS DC DCON EP7020 EXCHANGEABLE HEAD END MILLS iMX-R4F- Inch Sizes 35° Roughing head, 4 flute CARBIDE Carbon Steel, Alloy Steel, Cast Iron Tool Steel, Pre-hardened Steel,Hardened Steel Hardened Steel(<30HRC)(< 45HRC)(< 55HRC)Hardened Steel(>55HRC)AusteniticTitanium Alloy,Stainless SteelHeat Resistant AlloyCopper AlloyAluminum Alloy e u e e u Type1 APMX LH aThe roughing edge geometry reduces cutting resistance. Effective when rigidity of the machine or work material is low. (inch) Grade Order Number DC APMX LH DCON No. ofFlutes Type IMX10R4F0375M .375 .395 .630 .363 4 a 1 IMX12R4F0500M .500 .520 .789 .488 4 a 1 IMX16R4F0625M .625 .645 .945 .605 4 a 1 IMX20R4F0750M .750 .800 1.181 .730 4 a 1 IMX25R4F1000M 1.000 1.050 1.500 .980 4 a 1 Note 1) The fastening size of the holder and head should be the same. (refer to J002) J J022 a : USA Stock