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The ACCUPRO 685.62844471 is a K34 drill chuck key designed to tighten and release drill chucks on compatible drilling equipment. With a pilot diameter of 15/64 inches (0.2362 inches decimal), this key provides a precise, secure fit into the chuck body for reliable torque transfer during tool changes. It is compatible with 1/2-inch capacity chucks and is a standard accessory used by machinists, maintenance technicians, and metalworking professionals in shop and field environments. The key is a compact, single-piece tool weighing 0.13 pounds, making it easy to store and handle at the machine.
This drill chuck key is suited for use with 1/2-inch capacity drill chucks in bench drill presses, radial arm drills, and similar stationary drilling equipment. It is a direct-fit replacement or spare key for setups requiring a K34 key number. Tradespeople and shop technicians working in light manufacturing, fabrication, or maintenance and repair operations will find this key a practical addition to their tooling inventory. The K34 designation and 15/64-inch pilot diameter narrow fitment to specific chuck models, so confirming chuck compatibility before ordering is recommended.
Designed for use with 1/2-inch capacity drill chucks requiring a K34 key. Compatible with product number 10H as specified by the manufacturer.
Drill chuck keys are installed and removed by hand — no power tools are required. Always ensure the drill press or drilling machine is powered off and the spindle is at rest before changing tooling or engaging the chuck key. Insert the pilot into the chuck body hole fully before applying rotational force to avoid damaging the chuck gear teeth. Store the key away from the chuck when the machine is in operation to prevent ejection hazards.
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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