Drill bit set Bosch HSS cylindrical 3.3 mm, 10 pieces

Bosch HSS cylindrical drill bit set, 3.3 mm diameter, 10 pieces. These high-speed steel (HSS) bits are intended for general workshop and maintenance tasks, providing reliable performance when drilling metal, wood and plastics. The cylindrical shank design ensures compatibility with standard drill chucks and allows use in both hand drills and drill presses for routine repairs and precision hole-making.

Advantages

The set delivers consistent cutting performance and wear resistance typical of HSS material, offering a balance of hardness and toughness suitable for mixed-material use. The uniform 3.3 mm diameter across ten pieces ensures repeatability for series work and quick replacement. Cylindrical shanks simplify mounting in standard chucks and reduce runout for improved hole accuracy. The compact set format keeps replacement bits on hand for maintenance and light production tasks.

Suitable for

• Drilling holes in mild steel, aluminum and other non-hardened metals
• Woodworking tasks requiring small-diameter holes
• Plastics and composite materials where controlled drilling is needed
• Routine repair, maintenance and general workshop applications
• Use with hand drills and bench or pillar drill presses

Key specifications

• Material: High-speed steel (HSS)
• Drill diameter: 3.3 mm
• Shank type: Cylindrical shank for standard chucks
• Pieces in set: 10
• Intended materials: Metal, wood, plastics

How to use

Select an appropriate cutting speed for the material you are drilling and secure the workpiece to prevent movement. Install the 3.3 mm HSS bit into the drill chuck and tighten securely. For metals, use cutting fluid or lubricant to reduce heat and extend bit life; apply moderate feed pressure and allow the bit to clear chips frequently. For wood and plastics, moderate speed and light pressure reduce the risk of splintering or melting. After use, clean swarf from the flutes and store the bits in their set container to protect the cutting edges.

Usage recommendations

For best results when drilling metals, use a dedicated cutting lubricant and moderate speeds to minimize overheating. When drilling plastics, reduce speed and avoid excessive pressure to prevent melting. Replace bits when signs of wear such as rounded cutting edges or increased vibration appear to maintain hole quality and operator safety.