Century Drill Tool 98218 Hex Die 7/8-14 Nf 1-7/8 Inch

Product Description

The CENTURY DRILL TOOL CO INC 98218 is a 1-7/8 inch hex threading die designed for cutting and restoring 7/8-14 NF (National Fine) external threads. Made from tungsten alloy, this die handles routine maintenance and repair rethreading tasks where extreme precision or tight tolerance is not required. It is sized for use with a standard die stock wrench and suits field repair, shop bench work, and general-purpose thread restoration on fasteners, studs, and threaded rod. At 1.98 pounds, the 98218 is a solid, shop-ready tool for mechanics, plumbers, HVAC technicians, and general tradespeople who regularly service threaded components.

This die is suited for maintenance shops, fleet repair facilities, contractor service trucks, and any trade environment where rethreading damaged or corroded bolts and studs is a recurring task. The 7/8-14 NF thread specification is a fine-pitch national standard found on a range of mechanical fasteners and fittings across HVAC, plumbing, and light industrial applications. It is intended for situations where restoring thread engagement is the goal rather than cutting new threads to close manufacturing tolerances.

Key Features

• 7/8-14 NF thread specification for fine-pitch external thread cutting and restoration
• 1-7/8 inch hex body fits standard die stock wrenches
• Tungsten alloy construction for wear resistance during rethreading operations
• Suitable for routine maintenance and repair work where tight tolerances are not critical
• Compact and durable for repeated field and shop use

Compatibility

Designed as a general-purpose rethreading die for 7/8-14 NF external threads, compatible with standard 1-7/8 inch hex die stocks used in maintenance and repair applications.

Installation Notes

Threading dies should be installed and operated by qualified mechanics or tradespeople familiar with hand threading tools. Secure the workpiece firmly before applying the die, and use an appropriate cutting lubricant to reduce friction and extend die life. Never force the die onto heavily damaged threads without first cleaning and deburring the fastener. This tool is intended for rethreading and cleanup passes, not for cutting precision-tolerance threads on new stock.