Page 177 - Demo

175PRE-THREAD DRILLING WITH CHAMFERING %u00bd%u0009SOLID-DRILL Solid Carbide Combined DrillsThe ultimate solution for machining pre-threading small diameter holes is the use of solid carbide combined drills. Drills belonging to the ISCAR SOLID-DRILL line and described as SCDT %u2026-M%u2026(Solid Carbide Drill Thread with corresponding M thread size) in the range of 2.5-8.5 mm, which are compatible with ISO M thread standard %u201cM3%u201d to %u201cM10%u201d pre-thread hole dimensions.The dimensions of the SCDT %u2026-M%u2026 solid carbide pre-thread drills are designed according to DIN 6537 and the step length are according to DIN 8378. ISCAR%u2019s solid carbide combined drills are capable of machining holes with chamfer or counterbore holes in one operation.They provide maximum hole quality, reliable performance, and economic output.