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The PRECISION TWIST DRILL 1010032 is a general-purpose hand tap designed for cutting internal threads in a wide range of materials. It is configured for 5/16-18 coarse thread, meaning a 5/16-inch major diameter with 18 threads per inch. Hand taps like this one are used to thread through holes and blind holes by hand or with a tap wrench. Machinists, pipefitters, and maintenance technicians reach for this style of tap when threading fastener holes in metal, plastics, and similar workpiece materials during fabrication, repair, or equipment assembly work.
This tap is suited for general-purpose threading applications across both through-hole and blind-hole configurations. Its 5/16-18 UNC coarse thread profile is one of the most common fastener sizes in HVAC equipment frames, electrical enclosures, and mechanical assemblies, making it a practical addition to any trade toolbox or shop inventory. It is sold as a single unit and is appropriate for bench work, in-field repair, and production use where hand tapping is preferred over machine tapping.
Designed as a general-purpose hand tap for cutting 5/16-18 UNC internal threads in through-hole and blind-hole applications across a broad range of workpiece materials.
Hand taps should be used with a properly sized tap wrench to maintain alignment and control torque. Always back the tap out periodically to clear chips, especially when working in blind holes or with ductile metals. Ensure the correct pilot hole diameter is drilled before tapping to avoid tap breakage. Keep the tap lubricated with an appropriate cutting fluid for the workpiece material.
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