DEWALT Step Drill Bit DWA1786IR – 3/16 in to 7/8 in, Impact Ready

Overview

The DEWALT DWA1786IR Step Drill Bit covers a practical 3/16 to 7/8 inch range, designed for fast, clean hole creation in metal and wood. The split point tip starts holes with minimal wandering and allows you to begin drilling with more confidence, while the two flute spiral design moves chips away efficiently for smoother operation. This combination supports quick progression through hole sizes without frequent tool changes, making it a reliable choice for both professional tasks and DIY projects.

With a titanium nitride coating, this bit is built for durability. The coating helps reduce heat buildup and wear during repeated use, which translates to longer service life under demanding conditions. Laser engraved numbers are embedded into the bit, ensuring step visibility remains legible even after days on the job site. The result is a tool that stays readable and easy to set up, helping you track progress at a glance.

Durability and visibility

The improved wear resistance comes from the TiN coating, while the crisp laser markings provide quick size references. These features combine to support faster, more accurate hole drilling across your project workflow.

Performance with impact and versatility

Engineered to perform with impact drivers, the DWA1786IR also works in rotary drills when needed. The bit resists wandering and maintains a steady guide, helping you create clean, centered holes through metal and wood with consistent bite and control.

Real world applications

Whether you are installing cabinetry, mounting electrical boxes, framing metal components, or tackling hobby builds, the 3/16 to 7/8 inch steps cover a broad range of common tasks. The design eliminates the need to switch bits for incremental hole sizes, saving time on site and in the shop.

Getting the most from your bit

• Key benefits: faster starts, extended life, and clear step indicators for easier selection
• Use cases: metal, wood, and mixed-material projects with varying hole sizes
• Compatibility: optimized for impact drivers, still usable with rotary drills

Usage and care

• Apply steady pressure and let the bit cut to keep shavings clear
• Use light lubrication when drilling metal and avoid forcing the bit
• Clean and dry after use to maintain performance and reduce corrosion risks