Century Drill Tool Co Inc 95302 4-40 Tap No 43 Bit 2pc

Product Description

The CENTURY DRILL TOOL CO INC 95302 is a 4-40 national fine plug-style machine screw tap and number 43 drill bit combination pack, sold as a 2-piece set. The tap is precision cut to produce consistent, exact threads in standard 4-40 fastener applications. Both the tap and bit are heat treated and tempered for hardness and extended service life. This combo is designed specifically for hand cutting applications, making it a practical pairing for trade professionals and knowledgeable DIYers who need accurate threading in metal or similar materials without a tapping machine.

This combination pack is suited for residential and light commercial applications where 4-40 machine screw threads are required. Typical use cases include electrical enclosure work, control panel assembly, HVAC equipment service, and general mechanical fastening tasks where precise thread formation in small-diameter holes is needed. The number 43 drill bit is the correct tap drill size for 4-40 national fine thread, eliminating the need to source the tap and bit separately.

Key Features

• 4-40 national fine plug-style tap for standard machine screw threading
• Includes correctly sized number 43 drill bit for 4-40 thread preparation
• Precision-cut threads formed for consistent, exact threading results
• Heat treated and tempered for hardness and longer service life
• Designed for hand cutting applications
• Sold as a 2-piece combo pack, tap and bit together

Compatibility

Designed as a standard OEM-style tap and drill bit combo for hand threading 4-40 national fine machine screw holes in metal and similar materials.

Installation Notes

This tap and bit set is intended for use by machinists, electricians, HVAC technicians, and other trade professionals performing hand tapping operations. Always use appropriate cutting fluid when tapping metal to reduce friction and extend tap life. Secure the workpiece firmly before drilling and tapping to ensure accurate thread formation. Follow applicable workplace safety practices and de-energize any equipment before drilling into enclosures or panels.