Step Drills: Multi-Hole Efficiency at ToolsEngg.com
Step drills, or stepped drills, combine multiple diameters into one tool for drilling, countersinking, and deburring in a single operation. Ideal for sheet metal, thin plates, and automotive fabrication, ToolsEngg.com supplies durable HSS and carbide step drills for CNC and handheld use.
What Are Step Drills?
These conical tools feature graduated steps from 4mm up to 30mm diameters, with laser-etched markings for precise sizing. Unlike standard twist drills, step drills self-center on uneven surfaces, creating clean holes without pilot drilling. ToolsEngg.com offers uncoated and TiN-coated versions per DIN 164 standards, handling mild steel, aluminum, and plastics up to 6mm thick.
Key Advantages
Step drills slash cycle times by 50-70% through fewer tool changes, reducing setup costs in high-volume production. Their single-pass design minimizes burrs and distortion, ensuring burr-free edges for riveting or threading. Robust shanks prevent slippage in chucks, while sharp carbide edges extend life 5x over HSS.
Applications in Manufacturing
Perfect for electrical enclosures, HVAC ducts, brackets, and prototypes requiring progressive hole sizes. In export machine shops, they excel for sheet metal assemblies, panel drilling, and countersink preparation in aerospace components.
