Guhring 9039000180000 Spiral Point Tap M18 X 2.5

Product Description

The GUHRING 9039000180000 is a spiral point tap designed for right-hand, through-hole threading in metric coarse applications. Built from cobalt high-speed steel with a bright finish, it cuts an M18 x 2.5 thread profile to a 6H class of fit with D6/D7 thread limit. The plug chamfer style makes it well-suited for through-hole work where the tap can advance freely through the material. At 4.031 inches overall length with a 0.542-inch shank diameter and four flutes, this tap is part of the GUHRING Series 3900 line and is intended for use by machinists and tool and die professionals working in production or job-shop environments.

This tap is rated for threading in a range of materials including aluminum, gray cast iron, malleable iron, spheroidal iron, non-ferrous metals, and steel. Its cobalt construction provides added heat and wear resistance compared to standard HSS taps, making it a practical choice for harder steels and interrupted cuts. Typical applications include CNC machining centers, manual mills, and drill press setups where through-hole M18 metric threads are required. No coolant-through feature is present, so standard flood or mist cooling is appropriate for most setups.

Key Features

• M18 x 2.5 metric coarse thread form, 6H class of fit
• Cobalt HSS construction for improved wear and heat resistance over standard HSS
• Plug chamfer style optimized for through-hole threading applications
• Four-flute design for balanced cutting and chip management
• D6/D7 thread limit for consistent tolerance control
• Bright finish, right-hand cut, no coolant-through

Compatibility

Designed for through-hole threading in aluminum, gray cast iron, malleable iron, spheroidal iron, non-ferrous metals, and steel. Part of the GUHRING Series 3900.

Installation Notes

Installation should be performed by a qualified machinist following standard tapping procedures. Ensure the workpiece is securely fixtured and the spindle is properly aligned before beginning the threading operation. Apply appropriate cutting fluid or coolant for the material being tapped. Inspect the tap for wear or chipping between uses to avoid thread damage or tap breakage.