Step Drill Bit högert technik HT6D323, 4–32 mm range, single-piece stepped cutting flute

The step drill bit högert technik HT6D323 is a single-piece stepped cutting flute designed to drill and progressively enlarge holes in thin sheet materials. Covering a diameter range from 4 mm to 32 mm, this tool allows creating multiple hole sizes with one bit, reducing tool changes and setup time. It is intended for use on sheet metal, plastics and other thin materials commonly encountered in electrical panels, HVAC installations, automotive repairs and general fabrication work.

Advantages

The single-piece construction provides consistent alignment and increased rigidity compared with multi-piece designs. The stepped flute geometry enables smooth, sequential cutting from small to large diameters while maintaining concentricity. Suitable for a variety of thin materials, the bit reduces the need for pilot holes and reaming when enlarging existing openings. Its wide diameter range from 4 to 32 mm makes it a versatile option for installers and technicians who require multiple hole sizes without frequent tool changes.

Suitable for

• Drilling and enlarging holes in sheet metal and thin steel panels
• Creating cable entry and knockout holes in electrical enclosures
• HVAC ductwork and mounting holes for ventilation components
• Automotive bodywork and light fabrication tasks
• Plastics and composite panels where stepped hole sizing is needed

Key specifications

• Diameter range: 4–32 mm stepped increments
• Construction: single-piece stepped cutting flute
• Material compatibility: sheet metal, thin steel, plastics and similar thin materials
• Typical applications: progressive hole sizing, enlargement of existing holes, cable knockout work

How to use

Secure the workpiece and select a suitable drill with the correct chuck capacity for the bit shank. Start drilling at low to moderate speed and apply steady pressure, allowing the stepped geometry to cut progressively through the material. For thicker or harder sheets, reduce speed and withdraw periodically to clear chips. If enlarging an existing hole, align the initial step with the opening and advance to the desired larger step while maintaining perpendicular tool orientation.

Usage recommendations

Use appropriate cutting fluid or lubricant when working with metals to extend tool life and improve chip evacuation. Wear eye protection and gloves when drilling sheet materials to protect against sharp edges and hot chips. Match drill speed and feed to the material type: lower speeds for stainless steel and harder alloys, moderate speeds for mild steel and plastics.