Cobalt-Coated Twist Drill Bits

Introduction

The M35 High-Speed Steel (HSS) Twist Drill Bit Series is engineered for precision metal drilling in demanding industrial and commercial environments. Constructed with cobalt alloy content and finished in a distinctive roasted yellow coating, these bits offer superior durability, heat resistance, and wear protection when working with hard metals.

Designed to perform under high-speed rotation and challenging conditions, this series is ideal for fabricators, machine shops, and industrial suppliers seeking long-lasting tooling solutions for metal drilling operations. With OEM and ODM customization available, these drill bits are a reliable and scalable product offering for tool brands and industrial distributors.

Specifications

Key Features

• M35 Cobalt High-Speed Steel Composition
  Incorporates 5% cobalt alloy into HSS for enhanced hardness, red heat resistance, and longer tool life when drilling through stainless steel, cast iron, and high-tensile alloys.

• Precision Twist Design
  Standard 118° or 135° point geometry ensures smooth cutting and centering, reducing walking and improving hole accuracy.

• Roasted Yellow Oxide Finish
  Distinctive surface treatment improves chip flow and minimizes friction during operation, while also providing rust resistance.

• Industrial-Grade Durability
  Built to withstand high-speed drilling under heavy loads, especially in repetitive drilling environments.

• Size Versatility (1–13mm)
  Covers a wide range of drilling needs in one set, suitable for both small precision holes and larger pilot drilling tasks.

• OEM/ODM Flexibility
  Custom branding, packaging, and bulk orders supported—ideal for tool retailers and international hardware distributors.

Applications

These M35 HSS Cobalt Drill Bits are purpose-built for a variety of demanding industrial and manufacturing applications:

• Metalworking and Fabrication Shops
  Optimized for drilling stainless steel, hardened steel, aluminum alloys, and sheet metals.

• Machinery Maintenance and Repair
  A go-to tool for technicians requiring clean, reliable holes in high-strength components.

• Construction and Structural Assembly
  Suitable for structural steel, I-beams, and reinforcement bar installations.

• Automotive and Aerospace Component Drilling
  Performs well under high-temperature friction drilling of engine parts and alloy structures.

• Industrial Equipment Assembly Lines
  Durable enough for use in CNC drill stations and repetitive-use machine tooling.

Conclusion

The M35 HSS Cobalt Twist Drill Bit series delivers high-performance drilling capability for industrial users, fabricators, and distributors demanding precision and resilience. Its advanced material composition, roasted finish, and professional-grade construction make it an essential addition to any industrial tooling lineup.

With broad OEM/ODM support and attractive packaging options, this drill bit series is a scalable solution for brands looking to expand their metalworking product offering with a reliable, globally marketable tool.