Drill Bit Set Rittal 4050.802 Twist Drill Bits 3.3 mm, 10 pcs

Rittal 4050.802 Twist Drill Bits 3.3 mm, 10 pcs is a compact set of standard spiral drill bits engineered for producing consistent small-diameter holes. Each bit in the set has a diameter of 3.3 mm and is intended for general-purpose metalworking and workshop tasks where repeatable, accurate holes are required. The set is suitable for a range of common materials and is supplied as ten identical bits to support multiple operations or replacements.

Advantages

The Rittal 4050.802 set offers a uniform diameter across all pieces, enabling consistent hole sizes and straightforward bit replacement during production or repair work. As standard twist drill bits, they provide a familiar geometry that is compatible with most drill chucks and drilling machines. The set’s silver finish aids in visual inspection of wear and helps identify used versus unused bits during stock management.

Suitable for

• Drilling 3.3 mm holes in aluminium and non-ferrous metals
• Drilling plastic components and housings
• Workshop general-purpose drilling in steel and stainless steel (appropriate cutting parameters required)
• Maintenance, repair, and prototype work requiring multiple identical small drill bits

When it may not be suitable

This set is focused on a single drill diameter (3.3 mm) and therefore is not suitable when a range of different hole sizes is required; a multi-size set would be more appropriate in that case. For heavy production work in hard materials where wear resistance and extended life are critical, specialized coated or carbide bits may be preferable over standard twist bits.

Key specifications

• Type: Twist (spiral) drill bits
• Diameter: 3.3 mm
• Quantity: 10 pieces
• Suitable materials: Aluminium, Copper, Plastic, Stainless steel, Steel
• Colour/finish: Silver

How to use

Select a drill with a compatible chuck and secure the 3.3 mm Rittal bit firmly. Mark and, if required, center-punch the drilling location to reduce bit walking. Use appropriate spindle speed, feed rate, and cutting fluid depending on the workpiece material (lower speeds for stainless steel, higher speeds for aluminium and plastics). Apply steady axial pressure and clear chips frequently to prevent clogging and heat buildup. Replace worn or damaged bits from the set to maintain hole quality.

What to consider before purchase

• Required hole diameter: this set contains only 3.3 mm bits
• Material to be drilled and suitable cutting speeds/feed rates
• Compatibility with your drill chuck size and machine capabilities
• Whether coated or carbide bits are needed for high-volume or hard-material applications

Usage recommendations

For best results, use proper cutting fluid on ferrous materials, start with a pilot or center punch for precise positioning, and inspect bits regularly for wear. Store the bits in a dry place to avoid corrosion and keep spare bits from the set on hand for uninterrupted workflow.