Multi-step Uni-bit HOGERT HT6D323, 4–32 mm, stepped drill

The HOGERT Multi-step Uni-bit HT6D323 (4–32 mm) is a stepped drill designed to cut a range of hole diameters with a single tool. Engineered for use on sheet materials and thin metals, this uni-bit lets you drill, enlarge and countersink holes without the need to change bits frequently. Its stepped profile provides progressive cutting stages so you can create precise holes across the 4–32 mm range with one instrument.

Advantages

The stepped geometry reduces the number of tool changes and simplifies operations where multiple hole sizes are required. A single flute step design offers controlled chip evacuation and smoother transitions between diameters. The tool provides consistent hole quality and concentricity across the stepped sizes, saving time in repair, installation and light metalworking tasks.

Suitable for

• Drilling and enlarging holes in sheet metal and thin metal plates
• Countersinking and resizing holes for fasteners and fittings
• Maintenance, repair and installation tasks where multiple diameters are needed quickly
• Portable drilling work and on-site metal adjustments

Key specifications

• Diameter range: 4 mm to 32 mm in stepped increments
• Type: multi-step (stepped) uni-bit for incremental drilling
• Material compatibility: sheet materials and thin metals
• Geometry: stepped profile for progressive cutting stages
• Intended mounting: compatible with standard drill chucks and drivers

How to use

Secure the stepped drill in an appropriate drill chuck and set the drill speed according to the material thickness and type. Start drilling at low to moderate speed, allowing the larger steps to engage progressively. Apply steady axial pressure and avoid excessive force to maintain tool alignment and reduce burr formation. For existing holes, align the step corresponding to the desired final diameter and work gradually through the steps until the required size is reached. Use cutting fluid where appropriate for cleaner cuts and extended tool life.

Usage recommendations

Wear appropriate eye and hand protection when drilling. Match drill speed and feed to the work material: lower speeds for harder metals and higher speeds for softer sheet materials. Inspect the stepped cutting edges periodically and replace the tool when wear affects hole quality. For best results, pre-drill pilot holes in thicker materials or use progressive steps rather than forcing the largest diameter in a single pass.