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The CENTURY DRILL TOOL CO INC 95307 is a combo pack pairing a 10-32 national fine plug-style machine screw tap with a number 21 drill bit, sold as a 2-piece set. The tap features precision-cut threads accurately formed for consistent, repeatable threading results. Both the tap and bit are heat treated and tempered, producing hard threads and extending service life. This set is designed specifically for hand cutting applications, making it a practical addition to any trade toolbox where controlled, accurate thread cutting in metal or similar materials is required.
This 10-32 tap and drill bit combo is suited for threading tasks encountered in HVAC, electrical, plumbing, and general mechanical service work where machine screw fasteners are standard. The 10-32 national fine thread pitch is commonly found in control panel assemblies, electrical enclosures, and light mechanical components. The included number 21 drill bit is correctly sized to create the pilot hole needed before tapping 10-32 threads, streamlining the workflow and reducing the need to source matching bits separately.
Designed for hand-tapping 10-32 national fine machine screw threads in materials suited to manual thread cutting operations.
Thread cutting and tapping is performed by machinists, HVAC technicians, electricians, and plumbers during equipment installation or repair. Always secure the workpiece before beginning to tap, and use an appropriate cutting fluid to reduce friction and improve thread quality. Follow standard hand-tapping procedure: advance the tap forward, then back off periodically to clear chips. Ensure the pilot hole is drilled to the correct diameter with the included number 21 bit before threading.
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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