M35 Cobalt Twist Drill Bits – HSS Jobber Length Hardened Metal
M35 Cobalt Twist Drill Bits – HSS Jobber Length Hardened Metal
M35 Cobalt Twist Drill Bits – High-Speed Steel, Jobber Length
Upgrade your drilling toolkit with these M35 Cobalt High-Speed Steel (HSS-Co) Twist Drill Bits. Engineered for demanding applications, these jobber-length drill bits are built to cut through hardened metals, stainless steel, cast iron, and other tough materials with precision and efficiency. Whether you're a professional tradesperson or a serious DIY enthusiast, these bits deliver consistent, reliable performance job after job.
Why Choose M35 Cobalt Drill Bits?
- M35 HSS-Co Construction: Alloyed with 5% cobalt for exceptional heat resistance and extended cutting life — ideal for hard and abrasive materials that would wear out standard HSS bits.
- Jobber Length Design: The industry-standard length provides versatility across a wide range of drilling tasks, from light fabrication to heavy-duty metalwork.
- Spiral Flute Geometry: The precision-ground spiral design ensures efficient chip evacuation, reducing friction and heat build-up for smoother, cleaner holes.
- Hardened & Ground Finish: Fully hardened for maximum durability and dimensional accuracy, helping each bit maintain its cutting edge longer.
- Stainless Steel Compatible: Specially suited for drilling stainless steel, cast iron, hardened metals, and other high-tensile materials.
- Available in 3 Size Options: Choose the diameter that best suits your project needs.
Product Specifications
- Material: M35 High-Speed Steel with Cobalt (HSS-Co)
- Type: Twist / Jobber Length Drill Bit
- Finish: Hardened & Ground
- Compatible Materials: Hardened metals, stainless steel, cast iron, alloy steel
- Available Variants: 3 size options
Ideal Applications
- Metal fabrication and machining workshops
- Automotive and engineering repairs
- Plumbing and HVAC installation
- General construction and DIY metalwork
For general tool safety guidelines when working with drill bits and hand tools, refer to the OSHA Hand and Power Tools Safety Standards.
Frequently Asked Questions
Q: What materials can M35 Cobalt Drill Bits cut through?
A: M35 Cobalt HSS drill bits are designed to drill through hardened metals, stainless steel, cast iron, alloy steel, and other tough, high-tensile materials. The 5% cobalt content gives them superior heat resistance compared to standard HSS bits, making them the right choice for demanding metalwork applications.
Q: What does "Jobber Length" mean for drill bits?
A: "Jobber Length" refers to the standard drill bit length proportion — typically around 9–14 times the diameter of the bit. This is the most commonly used length in workshops and trades, offering a good balance of rigidity and reach for most general-purpose and professional drilling tasks.
Q: How does the spiral flute design improve drilling performance?
A: The spiral flute geometry channels material chips and debris away from the cutting zone as you drill. This efficient chip removal reduces heat build-up and friction, resulting in smoother, more precise holes and significantly extending the working life of each bit.
Q: Are these drill bits compatible with standard drill chucks?
A: Yes. These M35 cobalt twist drill bits feature a standard straight shank compatible with most corded and cordless drills, drill presses, and CNC machines with conventional chuck systems.