DRILL BITS* - Irwin

The Irwin HN60140 DRILL BITS* are engineered for professional technicians and mechanics requiring precision and efficiency in demanding automotive and industrial applications. This 7/16-inch 2-step drill bit delivers consistent performance for creating stepped holes, allowing for simultaneous pilot drilling and countersinking or counterboring in one pass. Crafted to withstand rigorous use, these professional-grade drill bits are an essential addition to any toolkit focused on quality and durability.

Key Features

• Optimized 2-Step Design: Facilitates quick and accurate creation of stepped holes, streamlining tasks that require both a pilot and a larger clearance or countersunk hole.
• 7/16-Inch Diameter: Precisely sized for specific fastener applications or general drilling requirements in various professional settings.
• Professional-Grade Construction: Manufactured from high-quality steel, these drill bits are built for durability and extended tool life under heavy use.
• Precision Drilling: Designed to ensure clean, accurate holes with reduced bit walking, providing reliable results for critical applications.
• Efficient Chip Evacuation: Features flute geometry designed for effective material removal, preventing clogging and maintaining drilling speed.

Applications

The Irwin HN60140 2-step drill bit is ideal for a broad range of tasks in professional environments. In automotive settings, it excels at preparing holes for specialized fasteners, creating clearance for wiring, or performing body and chassis modifications. For industrial use, these drill bits are well-suited for metal fabrication, machinery assembly, maintenance, and electrical installations where precise stepped holes are required through materials such as mild steel, sheet metal, and aluminum.