Tvardy cobalt HSS M35 metal drill bit 10 mm

Tvardy cobalt HSS M35 metal drill bit 10 mm is a solid high-speed steel cutting tool alloyed with cobalt to provide increased hardness, heat resistance and extended service life when drilling hard metals. With a 10 mm diameter and a ground split-point geometry, this drill bit is designed to penetrate steel, stainless steel and other tough alloys with reduced walking and improved centring. It is suitable for use in both hand-held drills and drill presses for metalworking, fabrication, maintenance and repair tasks.

Advantages

The M35 cobalt composition offers greater thermal stability and wear resistance compared with standard HSS, allowing higher cutting speeds and longer life in demanding applications. Precision ground flutes and a sharp point reduce thrust and improve chip evacuation, which helps maintain hole quality and dimensional accuracy. The single 10 mm size is easy to store and identify, and the bit’s durable construction supports repeated use in workshop and industrial environments.

Suitable for

• Drilling holes in mild and alloy steels
• Working with stainless steel and other hard metals
• Metal fabrication and structural assembly
• Maintenance, repair and overhaul (MRO) tasks
• Use in hand drills and drill presses

Key specifications

• Material: High-speed steel with cobalt alloy (M35)
• Diameter: 10 mm
• Point type: Split point (reduces walking and improves centring)
• Suitable for: Ferrous metals, stainless steel and hard alloys
• Shank: Cylindrical shank for standard drill chucks

How to use

Secure the workpiece and select an appropriate clamping method to prevent movement. Install the 10 mm Tvardy cobalt HSS M35 drill bit in a compatible drill chuck and tighten firmly. Use cutting fluid or lubricant when drilling stainless steel or other heat-sensitive alloys to reduce friction and extend the tool life. Start at low speed to establish the hole, then increase speed within recommended ranges for HSS M35 tools; apply steady feed pressure and allow the bit to clear chips periodically. Withdraw the bit occasionally to improve chip evacuation on deep holes.

Usage recommendations

For best results, use moderate to high spindle speeds and steady feed rates appropriate for HSS M35 cobalt drills, and apply cutting fluid when machining stainless steels or heat-treated materials. Replace the bit when wear degrades cutting performance or when chipping becomes evident to maintain hole quality and safety.