M35 Cobalt Drill Bit Set 1mm-5mm HSS for Stainless Steel 2.5mm

Description

Product Overview

The M35 Cobalt Drill Bit Set is engineered for precision and durability in the toughest metalworking environments. Each bit is crafted from high‑speed steel (HSS) with a cobalt alloy core, delivering exceptional hardness and heat resistance. The set includes sizes from 1mm to 5mm, covering a broad range of applications such as drilling stainless steel, cast iron, and other hard alloys. The 2.5mm tip size provides a balance between rigidity and flexibility, allowing users to start holes with confidence and maintain straightness throughout the drilling process. The bits feature a 135° split point geometry that reduces walking and ensures clean entry, while the polished coating minimizes friction and extends tool life.

Usage

Designed for both professional machinists and dedicated hobbyists, this drill bit set excels in a variety of settings. Whether you are assembling automotive components, fabricating equipment for the aerospace industry, or performing maintenance on heavy machinery, the M35 set provides the reliability needed for consistent results. The bits are compatible with standard 3‑jaw chucks, collet systems, and magnetic drill presses, making them versatile for handheld drills, bench‑mounted units, and CNC machines. Their ability to maintain sharpness under high temperatures makes them ideal for continuous drilling operations where tool changes can cause costly downtime.

Why Choose Us

Choosing the M35 Cobalt Drill Bit Set means investing in a product backed by rigorous quality control and a commitment to customer satisfaction. Each bit undergoes a multi‑stage heat treatment process to achieve a hardness rating of HRC 65+, ensuring resistance to wear and deformation. The cobalt content (5‑6%) enhances toughness, allowing the bits to cut through abrasive materials without chipping. Our after‑sales support includes a lifetime warranty against manufacturing defects, and a responsive technical assistance team ready to help with application advice, tool maintenance tips, and replacement inquiries.

Key Features

• High‑speed steel with cobalt alloy core for superior hardness and heat resistance
• 1mm‑5mm size range covers most small‑diameter drilling needs in metalworking
• 135° split point design reduces walking and delivers clean, accurate holes
• Polished coating minimizes friction, extending bit life and improving surface finish
• Lifetime warranty and dedicated technical support for peace of mind

FAQ

What materials can these bits drill?

The set is optimized for stainless steel, cast iron, carbon steel, and other hard alloys. It can also handle softer metals like aluminum and brass, though a different geometry may be preferred for those applications.

Are the bits compatible with my CNC machine?

Yes. The bits feature a standard shank that fits most CNC collet systems and tool holders. Ensure the collet size matches the shank diameter for optimal grip.

How do I maintain the sharpness of the bits?

Regularly clean the cutting edges with a brush or compressed air to remove metal chips. For occasional re‑sharpening, use a fine‑grit grinding wheel and maintain the original 135° point angle.

What is the warranty coverage?

The M35 Cobalt Drill Bit Set comes with a lifetime warranty against manufacturing defects. This does not cover damage from improper use, such as using the bits as screwdrivers or exceeding recommended speeds.

Can I purchase additional sizes?

Yes, additional sizes and larger sets are available. Contact our sales team for bulk pricing or custom assortments tailored to your specific drilling requirements.