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The IRWIN 63523 is a heavy duty high speed steel (HSS) drill bit sized at 23/64 inch. High speed steel construction allows the bit to maintain cutting hardness under the heat generated during drilling, making it suitable for repeated use in production and service environments. This bit is used for drilling through metal, wood, and plastic in applications where a standard twist drill is the correct tool. It is sized for tradespeople and experienced users who require a precise fractional diameter for fastener clearance holes, pilot holes, or dimensional drilling tasks.
The 23/64 inch diameter positions this bit in the mid-range fractional sizes commonly used in mechanical, electrical, and general fabrication work. It fits standard 3-jaw drill chucks and is appropriate for use with corded or cordless drills and drill presses. Electricians, plumbers, HVAC technicians, and general contractors reach for this size when drilling through framing members, sheet metal, or conduit backing plates where a close-tolerance hole is needed.
Designed as a standard fractional twist drill bit for use with any drill press or handheld drill accepting a 3-jaw chuck sized for 23/64 inch shank diameter.
Secure the workpiece before drilling to prevent movement. Ensure the bit is fully seated and tightened in the chuck before operation. Use appropriate cutting fluid when drilling hardened metals to extend bit life. Inspect the cutting edges before each use and replace if chipping or dulling is evident.
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