Solid Carbide EndmillsMilling Solid Carbide Endmills G550 - High Helix ∙ Square ∙ 4F .UNICO Coating provides superior wear resistance and reduces the coefficient of friction .Suitable for HRC 30 to HRC 55 Ordinary Steel, Alloy Steel, Cast Iron, Heat-Resistant Steel, FRP, etc. .Greater shearing action results in increased speeds and feeds and faster stock removal. .Strong helix design provides hi speed milling capabilities. Order No. Dia. (d) CL(L1) OAL Shank Flutes(L)(D)(F) EPSSH * EPSSH441000U 1.0 3 50 4 4 * EPSSH442000U 2.0 5 50 4 4 * EPSSH443000U 3.0 8 50 4 4 P M K N S H * EPSSH444000U 4.0 10 50 4 4 ● ● ● ○ EPSSH405000U 5.0 13 50 6 4 EPSSH406000U 6.0 15 50 6 4 d EPSSH407000U 7.0 18 60 8 4 EPSSH408000U 8.0 20 60 8 4 EPSSH409000U 9.0 22 75 10 4 EPSSH410000U 10.0 25 75 10 4 L1 EPSSH411000U 11.0 25 75 12 4 EPSSH412000U 12.0 30 75 12 4 EPSSH414000U 14.0 30 75 14 4 EPSSH416000U 16.0 35 100 16 4 L D (h6) Cutting conditions : Table 027 d Tolerance d≤6 0 ~ -0.02 6 < d ≤ 12 0 ~ -0.03 d > 12 0 ~ -0.04 A078