An HSS 5% cobalt drill bit with a 1/2-inch shank is a heavy-duty bit made from M35 high-speed steel with 5% cobalt, designed for drilling into tough materials like stainless steel, cast iron, and hardened steel. It features a 135-degree split-point tip to prevent “walking,” improved chip removal, and a 1/2-inch shank, which can be straight or a 3-flat design for better grip in a chuck.
Key features
- Material: Made from M35 high-speed steel (HSS) with 5% cobalt, providing excellent hardness, wear resistance, and heat resistance up to 1100∘𝐹.
- Applications: Ideal for drilling through hard metals, including hardened steel, stainless steel, cast iron, titanium, and other abrasive or high-alloy materials, as well as soft metals like copper and aluminum, and materials like wood and plastic.
- Tip: Features a 135-degree split-point tip that allows for self-centering, faster drilling, and prevents the bit from “walking” across the surface.
- Shank: The 1/2-inch shank is typically straight or has a 3-flat design to provide a secure grip in the drill’s chuck and prevent slipping.
- Flutes: Spiral flutes are designed for efficient chip removal, which helps reduce heat build-up during drilling.
- Durability: The cobalt content makes the bit more durable and longer-lasting, especially in heavy-duty applications.
