Guhring 9039150180000 Spiral Point Tap M18x2.5 Metric

Product Description

The GUHRING 9039150180000 is a spiral point tap designed for through-hole threading in steel applications. Built from HSS-E cobalt high-speed steel and finished with a titanium nitride (TiN) coating, this tap handles the heat and abrasion of production threading in ferrous materials. It cuts an M18x2.5 metric thread to a 6H class of fit with a D6/D7 thread limit, holding tight tolerances in through-hole work. The plug chamfer distributes cutting load across the lead threads, making it well suited for CNC machining centers and manual tapping where through-hole access is available. Overall length is 4.032 inches with a thread length of 1-13/16 inches.

This tap is intended for right-hand metric threading in steel, specifically through-hole applications where the spiral point pushes chips forward through the hole rather than packing them in the flutes. It is a Series 3915 tool from GUHRING, a line built for industrial and job-shop use in high-volume threading operations. Machinists, toolroom technicians, and CNC operators working with metric fastener specifications will find this tap appropriate for production or maintenance threading in steel workpieces requiring an M18x2.5 thread form.

Key Features

• M18x2.5 metric thread form with 6H class of fit and D6/D7 thread limit for consistent, gauged results
• HSS-E cobalt material provides elevated heat and wear resistance compared to standard HSS
• TiN coating reduces friction and extends tool life in steel threading applications
• 4-flute spiral point geometry pushes chips forward, keeping the hole clear during through-hole tapping
• Plug chamfer distributes cutting force across multiple lead threads for smooth entry
• Right-hand cut, no coolant-through requirement, no interrupted thread design

Compatibility

Designed for through-hole threading in steel workpieces requiring an M18x2.5 metric thread. Suitable for use in standard tapping chucks, quick-change tap holders, and rigid CNC tapping setups that accept the 0.542-inch shank diameter of this tool.

Installation Notes

Installation and use of this tap should be performed by qualified machinists or toolroom technicians. Secure the tap in a properly sized holder and confirm spindle direction is set for right-hand cutting before starting. Use appropriate cutting fluid or tapping compound rated for steel to protect the TiN coating and prolong tool life. Never reverse-cycle the tap until chips are cleared when working near the bottom of a through-hole.