Solid Carbide Endmills H680 - High Precision Square Type - 4F 鎢鋼平銑刀 - 標準型 - 4 刃 . 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. Dia. CL OAL Shank Flutes Order No. (d) (L1) (L) (D) (F) EHSFF4 EHSSF4 EHSFF401000S 1.0 3 50 4 4 EHSFF401500S 1.5 4 50 4 4 EHSFF402000S 2.0 5 50 4 4 EHSFF402500S 2.5 6 50 4 4 EHSSF403000S 3.0 8 50 6 4 EHSSF404000S 4.0 10 50 6 4 d EHSSF405000S 5.0 13 50 6 4 EHSSF406000S 6.0 15 50 6 4 EHSSF408000S 8.0 20 60 8 4 L1 EHSSF410000S 10.0 25 75 10 4 EHSSF412000S 12.0 30 75 12 4 L D 65 Cutting conditions ( 建議切削參數表 ) : Table 006 d Tolerance Ø ≦ 6 +0 ~ -0.01 Ø ≧ 8 +0 ~ -0.02 A014