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The DEWALT DW2540 is a mechanics-style drill bit designed for use with countersinks in light drilling and prep applications. Built from high-speed steel (HSS), this bit resists heat and wear through typical metal and wood drilling tasks. It features a 1/4 inch hex shank for fast, tool-free bit changes in any standard hex-chuck driver or drill. The 7/32 inch cutting diameter and compact 1-3/8 inch overall length make it well-suited for tight-clearance work. Licensed tradespeople and production technicians who regularly run countersink operations will find this a practical, purpose-matched accessory for their driver setup.
This bit is intended for use with countersink tools and accessories that accept a 7/32 inch pilot drill. The 1/4 inch hex shank seats directly into quick-change chucks commonly found on cordless drills, impact drivers used at low torque settings, and dedicated countersink driver kits. It is appropriate for light fabrication, woodworking, cabinetry, and metal prep work in both residential and commercial trade settings where countersink pilots are part of the regular workflow.
Designed for use with countersink tools and quick-change hex-chuck systems that accept a 1/4 inch hex shank and require a 7/32 inch pilot drill bit.
Install this bit into a 1/4 inch hex quick-change chuck by pressing the shank fully into the chuck until it seats and locks. When using with an impact driver, select the lowest available torque or drilling mode to avoid bit damage. Inspect the cutting tip for wear before each use and replace if the edge shows chipping or dullness. No special tools or fastener codes apply to bit installation itself, but always follow the tool manufacturer guidelines for the countersink accessory this bit is paired with.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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