HSS Straight Flute Step Drill Bits for Sheet Metal Drilling

An HSS Step Drill Bit, often referred to as a pagoda drill, is a conical-shaped cutting tool with a series of progressively larger "steps" or diameters. Each step acts as a separate drill size, allowing the user to create multiple hole sizes with a single tool.

Start by positioning the bit at the marked center and drill at a steady, moderate speed. Allow each step to cut progressively until the desired diameter is reached, avoiding excessive pressure.

Step bits are primarily designed for thin-gauge materials. As a professional rule of thumb, a step bit can effectively drill metal that is no thicker than the height of an individual step (typically 4mm to 5mm).

A step drill bit is also known as a cone drill bit or step cone drill, especially in industrial and manufacturing applications.

A spiral flute step bit helps remove chips more efficiently and reduces heat during drilling. A straight flute design is more rigid and suitable for controlled drilling in thinner materials with less vibration. For B2B production lines, spiral flutes typically offer a quieter operation and a longer tool life.

The main purpose of a step drill bit is to drill multiple hole sizes cleanly without changing tools. It improves efficiency, reduces burr formation, and is especially useful for thin materials like metal sheets and plastics.