Cobalt Drill Bits for Stainless Steel & Alloy Steel
Drillco’s Cobalt Drill Bits are specifically engineered for the toughest industrial applications, including those involving high-tensile alloy steel, hardened steel, and stainless steel. Manufactured from premium M42 cobalt, these twist drill bits offer superior heat resistance and structural strength compared to standard high speed steel (HSS) bits. Every jobber length bit in this category features a 135 degree split point, which eliminates the need for a pilot hole and prevents the bit from "walking" on hard surfaces. The distinct bronze coating acts as a high-performance lubricant, significantly extending tool life during heavy-duty drilling in cast iron or other abrasive materials.
While these bits represent a professional-grade investment, their extreme durability makes them the most cost-effective choice for use in a stationary drill press or a high-torque handheld chuck. Explore our full catalog for a cobalt drill bit set or browse related tools like metric bits, step drill bits, and countersinks to complete your industrial kit.
Your Nationwide Distributor for Drillco Cobalt Drill Bits
Fasteners Etc., Inc. is a veteran-owned business and a premier nationwide supplier of professional-grade cobalt drill bits. We carry a complete range of jobber sizes to support industrial, construction, and commercial projects across the entire United States. Whether you are looking for a specific diameter to penetrate hardened steel or require a bulk quantity order for a production line, we provide the technical expertise and fast shipping required to keep your operation running on schedule. Trust Fasteners Etc., Inc. as your dependable source for high-performance metal drill bits and professional fasteners.
Ready to Order?
If you need assistance with technical specifications or material compatibility, please contact our sales team today. For volume discounts or custom kitting, you can request a quote to receive a competitive bid tailored to your project requirements.