SQUAREBALLRADIUSTAPERCHAMFERROUGHINGEXCHANGEABLE HEAD END MILLS DC DCON EP7020 EXCHANGEABLE HEAD END MILLS iMX-S4HV- Inch Sizes 42° Square head, 4 flute, Irregular helix 45° 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 APMX Curved Edge DC <.500" DC>.500" 0 0 - .0008" - .0012" aIrregular helix controls vibration and achieves stable machining. (inch) Grade Order Number DC APMX LH DCON No. ofFlutes Type IMX10S4HV0375M .375 .375 .630 .363 4 a 1 IMX12S4HV0500M .500 .500 .789 .488 4 a 1 IMX16S4HV0625M .625 .625 .945 .605 4 a 1 IMX20S4HV0750M .750 .750 1.181 .730 4 a 1 IMX25S4HV1000M 1.000 1.000 1.500 .980 4 a 1 Note 1) The fastening size of the holder and head should be the same. (refer to J002) J J010 a : USA Stock