Drill bit for metal MODECO HSS cylindrical 4.2 mm set of 10 (MN-60-442)

MODECO HSS cylindrical drill bits, 4.2 mm diameter, set of 10 pieces designed for drilling metal. Manufactured from high-speed steel (HSS) and featuring a straight cylindrical shank, these bits are intended for use in hand drills and drill presses. They are suitable for creating precise holes in steel and other ferrous and non-ferrous metals commonly encountered in repair, fabrication and DIY metalworking tasks.

Advantages

High-speed steel construction provides good hardness and wear resistance at typical drilling temperatures, enabling reliable performance on a range of metal materials. The cylindrical straight shank ensures secure clamping in standard drill chucks and easy replacement between jobs. Supplied as a set of 10, this pack supports repeated use and reduces downtime for tasks that require multiple identical holes.

Suitable for

• Drilling holes in steel and stainless steel (thin to medium sheet thickness)
• Working with non-ferrous metals such as aluminum, brass and copper
• General metal repair and maintenance tasks
• Workshop fabrication and prototype work
• DIY metalworking projects at home

Key specifications

• Material: High-speed steel (HSS)
• Diameter: 4.2 mm
• Shank type: Cylindrical / straight shank
• Quantity in set: 10 pieces
• Intended use: Metal drilling (ferrous and non-ferrous)

How to use

Mark and center-punch the drilling location to prevent bit walking. Secure the workpiece and select an appropriate spindle speed for the material — slower speeds for harder steels, higher speeds for softer non-ferrous metals. Use steady, moderate feed pressure and withdraw periodically to clear chips and reduce heat buildup. Apply cutting fluid when drilling harder or thicker metals to extend bit life and improve cutting performance. After use, clean chips from the flutes and store the bits dry to prevent corrosion.

Usage recommendations

For best results, use appropriate personal protective equipment, clamp workpieces firmly, and select drill speeds and cutting fluids suitable for the specific metal type and thickness. Replace bits that show excessive wear, chipping, or rounding of the cutting edge to maintain hole quality and safety.