Step Drill

A step drill, also known as a unibit or a cone drill, is a specialized cutting tool used for drilling holes of multiple diameters in thin materials such as metal, plastic, and wood. This unique drill bit design features multiple stepped levels that incrementally increase in size, allowing users to create precise holes without the need for changing drill bits.

In industries such as HVAC, electrical, plumbing, and metal fabrication, step drills are essential for tasks such as installing conduit, creating openings for cables, and enlarging holes in sheet metal. The gradual step design of the drill bit provides versatility and efficiency for various hole sizes.

Key features of a step drill include a hex shank for secure chuck grip, laser-etched size markings for easy identification, and a self-starting tip for accurate drilling. These features enable users to drill holes of different diameters with precision and control, reducing the need for multiple drill bits.

When importing or exporting step drills, compliance with material standards and cutting performance is crucial to ensure the effectiveness and longevity of the tools. Customs brokers and importers should verify the coating materials used on the drill bits for wear resistance and heat dissipation.

Common applications of step drills include electrical panel installations, metal fabrication, automotive repairs, and DIY projects. In real-world scenarios, step drills are essential for professionals and enthusiasts, enabling them to create accurate holes in various materials with efficiency and ease.