Diablo DHS4BITCB 4 Inch Cobalt Pilot Drill Bit for Hardened Metals Stainless Steel Cast Iron Snap-Lock Plus Mandrel System Compatible 1/4" Hex Shank

Extreme Heat Resistance: Diablo 4" Cobalt Pilot Bit for Hardened Metal and Stainless Steel

The Diablo DHS4BITCB 4-Inch Cobalt Pilot Drill Bit is the ultimate high-performance solution for professionals tackling the toughest drilling applications in hardened metals, cast iron, and stainless steel. Forged with premium cobalt, this pilot bit is engineered to maintain its cutting edge in high-heat environments where standard bits typically fail. Whether you are an industrial fabricator or a specialized mechanical contractor, this bit provides the speed and durability required to bore through abrasive, high-strength alloys with unmatched efficiency and precision.

Optimized for maximum jobsite productivity, this cobalt pilot bit features full compatibility with the Snap-Lock Plus™ Mandrel System. This innovative design allows for rapid, tool-free connectivity, enabling you to switch between hole saw cups and pilot bits in seconds with zero downtime. The 4-inch length provides the necessary reach for deep-hole applications, while the 1/4-inch hex shank ensures a secure, slip-free fit in both standard drills and high-torque impact drivers, streamlining your workflow across the entire project.

Key Features

• Hardened Metal Specialist: Specifically designed to deliver clean, fast cuts in stainless steel, cast iron, and high-strength alloys.
• High-Heat Performance: Premium cobalt construction provides elevated durability and cutting performance in extreme temperature applications.
• Snap-Lock Plus™ Ready: Fits all Diablo Snap-Lock Plus™ mandrels for fast, efficient tool changes and maximum productivity.
• Increased Productivity: High-performance geometry delivers faster cutting speeds and a longer life cycle than standard bi-metal bits.
• Extended Reach: The 4-inch (101.6mm) overall length is ideal for deep boring and ensuring proper hole saw alignment.
• Universal Hex Shank: 1/4-inch hex shank design prevents bit spinning and provides stability in all standard drill chucks.

What's Included

• (1) 4" Cobalt Pilot Drill Bit for Hardened Metals (DHS4BITCB)

Specifications

Pro-Tip: To extend the life of your cobalt pilot bit when drilling through thick stainless steel or hardened alloys, use a lower RPM and apply steady, consistent pressure. Using a dedicated cutting fluid or lubricant will help dissipate heat even further, ensuring the cobalt tip stays sharp for dozens of extra holes.