Guhring 9028760040000 Spiral Point Tap M4 X 0.7

Product Description

The GUHRING 9028760040000 is a spiral point tap designed for cutting M4 x 0.7 metric internal threads in through-hole applications. Built from cobalt high-speed steel with an oxide finish, it delivers added heat and wear resistance when threading tough materials. The plug chamfer style guides the tap into the hole progressively, distributing cutting load across the lead threads. With a 6H thread class of fit and D3/D4 thread limit, it produces threads within standard tolerance ranges suitable for most metric fastener assemblies. Licensed machinists, tool and die makers, and maintenance technicians use this tap in production and repair environments.

This tap is suited for through-hole threading in stainless steel and steel workpieces where metric M4 x 0.7 threads are required. The 3-flute spiral point geometry pushes chips forward ahead of the tap, making it well matched to through-hole operations on CNC machining centers, drill presses, and hand tapping setups. The right-hand thread direction follows standard metric fastener convention. The cobalt construction gives it an advantage over standard HSS taps when working with work-hardening stainless steel grades.

Key Features

• M4 x 0.7 metric thread form with 6H class of fit and D3/D4 thread limit
• Cobalt high-speed steel construction for improved performance in stainless steel and alloy steel
• Oxide finish provides corrosion resistance and reduces friction during cutting
• Plug chamfer distributes cutting forces gradually for controlled thread entry
• 3-flute spiral point design pushes chips forward, suited to through-hole applications
• Right-hand cut, no coolant-through required

Compatibility

Designed for through-hole threading in stainless steel and steel. Fits standard tap holders and chucks accepting a 4.50 mm shank diameter. Part of the GUHRING Series 2876 tap line.

Installation Notes

This tap is installed and operated by machinists, tool and die professionals, and maintenance technicians. Secure the workpiece and ensure the tap is aligned perpendicular to the hole before engagement. Use appropriate tapping fluid or cutting oil for the material being threaded to extend tool life and improve thread quality. Inspect the tap for wear or chipping regularly, and never force a worn tap as it may break in the hole and require extraction.