Description

The CENTURY DRILL TOOL CO INC 97515 is a metric plug-style tap and letter drill bit N combo pack designed for hand cutting thread applications. The set pairs a 9.0×1.25 metric tap with a matching letter drill bit N to give technicians and tradespeople a matched starting and threading solution in a single purchase. Threads are precision cut and accurately formed for consistent, exact threading results. The tap is heat treated and tempered to file-hard hardness, supporting longer service life under repeated use. The pack contains 2 pieces and is sold by the each.

This combo pack is suited for metalworking tasks requiring metric thread creation, including repair work on threaded fastener holes, tapping new holes in steel or similar materials, and field maintenance applications. It is commonly used by mechanical contractors, maintenance technicians, and experienced tradespeople who need a reliable metric tap-and-drill set for hand cutting operations. The 9.0×1.25 metric thread specification is a standard coarse-thread pitch widely used in equipment repair and general fabrication work.

Key Features

9.0×1.25 metric plug-style tap paired with letter drill bit N for matched hole and thread sizing
Precision-cut threads accurately formed for consistent, exact threading results
Heat treated and tempered to file-hard finish for extended service life
Designed for hand cutting applications
2-piece combo pack sold as a single unit

Compatibility

Designed as a standard 9.0×1.25 metric plug tap and letter drill bit N combo for hand cutting thread applications in compatible metalworking and maintenance scenarios.

Installation Notes

Installation and use should be performed by qualified tradespeople or experienced technicians familiar with manual tapping procedures. Secure the workpiece firmly before drilling or tapping to prevent movement. Use appropriate cutting fluid to reduce friction and extend tool life when tapping steel or ferrous materials. Follow standard hand tapping technique, reversing periodically to break chips and avoid tap breakage.