
.ARCO coating provides a superior wear resistance. .Suitable for HRC 50 and over HRC 50 Hardened Steel, also maximum up to HRC 65. .Long tool life and wear resistant due to its negative angle with corner radius design. .The coating can change to SICO.
| Order No. | Dia. (d) | Corner Radius (R) | CL (L1) | OAL (L) | Shank (D) | Flutes (F) |
| EHCSH441002A | 1 | 0.2R | 2 | 50 | 4 | 4 |
| EHCSH441003A | 1 | 0.3R | 2 | 50 | 4 | 4 |
| EHCSH441502A | 1.5 | 0.2R | 3 | 50 | 4 | 4 |
| EHCSH441503A | 1.5 | 0.3R | 3 | 50 | 4 | 4 |
| EHCSH442002A | 2 | 0.2R | 4 | 50 | 4 | 4 |
| EHCSH442003A | 2 | 0.3R | 4 | 50 | 4 | 4 |
| EHCSH442005A | 2 | 0.5R | 4 | 50 | 4 | 4 |
| EHCSH433002A | 3 | 0.2R | 6 | 50 | 3 | 4 |
| EHCSH443002A | 3 | 0.2R | 6 | 50 | 4 | 4 |
| EHCSH433003A | 3 | 0.3R | 6 | 50 | 3 | 4 |
| EHCSH443003A | 3 | 0.3R | 6 | 50 | 4 | 4 |
| EHCSH433005A | 3 | 0.5R | 6 | 50 | 3 | 4 |
| EHCSH443005A | 3 | 0.5R | 6 | 50 | 4 | 4 |
| EHCSH433010A | 3 | 1.0R | 6 | 50 | 3 | 4 |
| EHCSH443010A | 3 | 1.0R | 6 | 50 | 4 | 4 |
| EHCSH444002A | 4 | 0.2R | 8 | 50 | 4 | 4 |
| EHCSH444003A | 4 | 0.3R | 8 | 50 | 4 | 4 |
| EHCSH444005A | 4 | 0.5R | 8 | 50 | 4 | 4 |
| EHCSH444010A | 4 | 1.0R | 8 | 50 | 4 | 4 |
| EHCSH404003A | 4 | 0.3R | 8 | 50 | 6 | 4 |
| EHCSH404005A | 4 | 0.5R | 8 | 50 | 6 | 4 |
| EHCSH404010A | 4 | 1.0R | 8 | 50 | 6 | 4 |
| EHCSH405005A | 5 | 0.5R | 10 | 50 | 6 | 4 |
| EHCSH405010A | 5 | 1.0R | 10 | 50 | 6 | 4 |
| EHCSH406003A | 6 | 0.3R | 12 | 50 | 6 | 4 |
| EHCSH406005A | 6 | 0.5R | 12 | 50 | 6 | 4 |
| EHCSH406010A | 6 | 1.0R | 12 | 50 | 6 | 4 |
| EHCSH408005A | 8 | 0.5R | 16 | 60 | 8 | 4 |
| EHCSH408010A | 8 | 1.0R | 16 | 60 | 8 | 4 |
| EHCSH408015A | 8 | 1.5R | 16 | 60 | 8 | 4 |
| EHCSH410005A | 10 | 0.5R | 20 | 75 | 10 | 4 |
| EHCSH410010A | 10 | 1.0R | 20 | 75 | 10 | 4 |
| EHCSH410015A | 10 | 1.5R | 20 | 75 | 10 | 4 |
| EHCSH410020A | 10 | 2.0R | 20 | 75 | 10 | 4 |
| EHCSH412005A | 12 | 0.5R | 24 | 75 | 12 | 4 |
| EHCSH412010A | 12 | 1.0R | 24 | 75 | 12 | 4 |
| EHCSH412015A | 12 | 1.5R | 24 | 75 | 12 | 4 |
| EHCSH412020A | 12 | 2.0R | 24 | 75 | 12 | 4 |
R
| d Tolerance | |
| d ≤ 12 | 0 ~ -0.02 |
| d > 12 | 0 ~ -0.03 |
| R Tolerance | |
| R < 2 | ±0.015 |
| R ≥ 2 | ±0.020 |