Solid Carbide Endmills H680 - High Precision ∙ Long Shank ∙ Corner Radius ∙ 4F .SICO-TH Nano coating provides a superior wear and heat resistance. .Suitable for HRC 50 and over HRC 50 Hardened Steel, also maximum up to HRC 65. .Ultra grain carbide rods with better abrasion resistance. .Special geometry design, suitable for high hardened working materials. Order No. Dia.(d) CornerRadius(R)CL(L1) OAL Shank Flutes(L)(D)(F) EHCLF * EHCLF40400507S 4 0.5R 8 75 6 4 * EHCLF40600507S 6 0.5R 12 75 6 4 * EHCLF40600510S 6 0.5R 12 100 6 4 P M K N S H * EHCLF40800507S 8 0.5R 16 75 8 4 ● ○ ● ○ ● * EHCLF40800510S 8 0.5R 16 100 8 4 * EHCLF41000510S 10 0.5R 20 100 10 4 d R * EHCLF41200510S 12 0.5R 24 100 12 4 L1 L D (h5) Cutting conditions : Table 006 d Tolerance d≤6 0 ~ -0.02 d>6 0 ~ -0.03 R Tolerance R<2 ±0.015 R≥2 ±0.020 A023