Guhring 9039600040000 Spiral Point Tap M4x0.7 Cobalt

Product Description

The GUHRING 9039600040000 is a spiral point tap designed for through-hole threading in metric M4 x 0.7 applications. Built from cobalt high-speed steel and finished with a MolyGlide coating, this tap is engineered for improved chip evacuation and extended tool life in production threading environments. The plug chamfer style makes it suited for starting threads cleanly in through-hole setups. With a 6H thread class of fit and D3/D4 thread limit, it delivers consistent thread geometry that meets standard metric tolerance requirements. Licensed machinists, tool-and-die makers, and maintenance technicians working with ferrous and non-ferrous materials rely on this Series 3960 tap for reliable, repeatable results.

This tap is intended for through-hole threading operations across a broad range of workpiece materials including aluminum, gray cast iron, malleable iron, spheroidal iron, non-ferrous metals, and steel. It is well-suited for CNC machining centers, drill presses, and manual tapping operations where a right-hand M4 x 0.7 thread is required. The 3-flute geometry assists in pushing chips ahead of the cutting edge during through-hole work, reducing the risk of chip packing in the flutes.

Key Features

• Cobalt high-speed steel construction for improved heat and wear resistance in tough materials
• MolyGlide finish reduces friction and extends tool life during threading operations
• 3-flute spiral point design pushes chips forward, optimized for through-hole threading
• Plug chamfer for clean thread entry in through-hole applications
• 6H class of fit with D3/D4 thread limit for standard metric thread tolerance
• Right-hand thread direction, Series 3960

Compatibility

Designed for through-hole threading in workpieces made from aluminum, gray cast iron, malleable iron, spheroidal iron, non-ferrous metals, and steel. Fits standard M4 x 0.7 metric tap holders and tapping chucks accepting a 0.168-inch shank diameter.

Installation Notes

This tap should be installed by a qualified machinist or maintenance technician familiar with threading operations and machine tool safety. Secure the workpiece and ensure the tap is properly aligned with the pre-drilled through-hole before beginning the threading cycle. Use an appropriate cutting fluid or tapping compound compatible with the workpiece material to support the MolyGlide coating and reduce heat buildup. Inspect the tap for wear or chipping regularly, and replace before thread quality degrades.