Century Drill Tool 97500 Metric Tap Drill Bit Combo 3.0x0.50

Product Description

The CENTURY DRILL TOOL CO INC 97500 is a metric plug-style tap and number drill bit combo pack designed for hand cutting thread applications in metal and similar materials. The kit pairs a 3.0x0.50mm metric tap with a number 40 drill bit, providing the correct clearance drill alongside the tap for a complete threading workflow. Threads are precision cut and accurately formed for consistent, repeatable results. The tap and bit are heat treated and tempered to file-hard hardness, extending service life and maintaining thread accuracy across repeated use. Packaged as a 2-piece set, this combo suits technicians and tradespeople who need a matched tap-and-drill solution without sourcing components separately.

This combo pack is suited for hand tapping operations where a metric M3x0.50 thread is required. Typical applications include threading mounting holes in sheet metal, brackets, enclosures, and mechanical assemblies encountered in HVAC, electrical, and general mechanical service work. The plug-style tap geometry is the standard choice for through-hole and moderately deep blind-hole threading. The included number 40 drill bit is the correct tap drill size for the M3x0.50 thread specification, eliminating guesswork during layout and drilling.

Key Features

• Metric plug-style tap in 3.0x0.50mm thread specification paired with a matching number 40 drill bit
• Precision-cut threads accurately formed for consistent, exact thread engagement
• Heat treated and tempered to file-hard condition for extended tool life
• Designed for hand cutting applications
• 2-piece combo pack provides tap and correct tap drill bit together

Compatibility

Designed for hand tapping M3x0.50 metric threads in materials suitable for standard high-carbon or alloy tap stock, including mild steel, aluminum, and similar metals commonly worked in trade applications.

Installation Notes

Tap and drill bit installation is typically performed by machinists, maintenance technicians, or tradespeople using a tap handle and drill. Always secure the workpiece before drilling and tapping. Use appropriate cutting fluid for the material being threaded to reduce heat buildup and extend tool life. Follow standard tapping practice by backing off the tap periodically to break chips and prevent tap breakage.