Drill Bit for Metal GEKO T03050 HSS M35 5 mm – cobalt alloy, for metal drilling

GEKO T03050 is a 5 mm HSS M35 cobalt alloy drill bit designed for accurate metal drilling. Made from high-speed steel with 5% cobalt (M35), this drill bit offers increased red hardness and improved wear resistance compared with standard HSS. It is intended for use in handheld and bench drills to produce precise round holes in a variety of ferrous and non-ferrous metal materials, including stainless steel and harder alloys encountered in fabrication, maintenance, and repair work.

Advantages

The M35 cobalt composition enhances heat resistance and cutting-edge durability, reducing wear during extended drilling in hard metals. The 5 mm diameter provides a common, versatile size for pilot holes and final holes in metalwork. The geometry of the cutting lips and flute design promotes efficient chip evacuation and stable drilling performance, helping to maintain hole roundness and surface finish when used at recommended speeds and with proper cooling.

Suitable for

• Drilling stainless steel sheets and structural parts
• Creating holes in hard alloys and high-strength metals
• Fabrication, maintenance and repair tasks in workshops
• Use with handheld drills and drill presses for metalworking

Key specifications

• Material: High-speed steel with cobalt alloy (M35)
• Diameter: 5 mm
• Intended use: Metal drilling, including stainless steel and hard alloys
• Suitable drill types: Handheld drills and bench drill presses
• Typical performance: Improved heat resistance and wear life compared to standard HSS

How to use

Secure the workpiece firmly and mark the drilling point. Use a center punch for greater accuracy on sheet or plated surfaces. Fit the drill bit into the chuck and tighten securely. Select a moderate drilling speed appropriate for the metal being worked; lower speeds are recommended for stainless steel and hard alloys to reduce heat buildup. Apply steady, even pressure and allow the drill to cut without forcing. Use cutting fluid or lubrication to improve performance and extend tool life, and periodically withdraw the bit to clear chips.

Usage recommendations

For best results when drilling stainless steel or hard alloys, use a cutting lubricant, maintain lower spindle speeds, and avoid excessive pressure. Inspect the bit for wear and replace when chipping or rounding of the cutting edge reduces hole quality.