Step Drill Chamfers, Drills in One Operation, Saving Time

Emuge’s EF step drill is a high-penetration rate solid carbide drill that can chamfer and drill in one operation, saving time.

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Emuge’s EF step drill is a high-penetration rate solid carbide drill that can chamfer and drill in one operation, saving time. It also provides a more accurate hole-to-chamfer location and improves hole preparation for tapping or thread milling. The tools feature a double-margin design on the minor diameter for round threaded hole size. Web construction is adjusted for each diameter to improve chip evacuation efficiency.

The EF step drill stock program includes a range of sizes from 2.8 to 15.5 mm minor diameter, UNC/UNF (No. 6-32, 0.625" to 11"), M/MF (M3 to M18) and a full range of sizes in 2×D and 3.5×D lengths. Tools have a coolant-through, four-margin design with TiAIN-T14 coating. They can cut a range of materials and are available in cut or form thread diameters.