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The DEWALT DW1623 is an 11/16-inch black oxide reduced shank drill bit designed for drilling into metal. The reduced shank measures 3/8 inch, allowing this larger-diameter bit to fit standard 3/8-inch chuck drills without requiring a larger tool. Black oxide coating reduces friction and extends bit life compared to uncoated high-speed steel. This bit is sold individually and is intended for use by electricians, plumbers, HVAC technicians, and general trade professionals who need to bore clean, accurate holes through ferrous and non-ferrous metals during rough-in or fabrication work.
The DW1623 is suited for residential and light commercial applications where a 3/8-inch drill is the tool on hand but a larger hole diameter is required. Typical use cases include drilling through sheet metal, steel studs, electrical enclosures, and similar metal substrates. The reduced shank design makes this bit a practical option when a full-shank 11/16-inch bit would require a larger chuck than what is available on the job.
Designed for use with standard 3/8-inch keyless or keyed chuck drills. Compatible with corded and cordless drill drivers accepting a 3/8-inch shank. Intended for metal drilling applications.
Secure the bit firmly in the drill chuck before use and verify the chuck is fully tightened. Use cutting fluid or a suitable metal-cutting lubricant when drilling thicker stock to reduce heat buildup and extend bit life. Always wear appropriate eye protection when drilling metal. Follow applicable workplace safety standards and tool manufacturer guidelines for drill speed selection based on material and bit diameter.
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