Guhring 9039660030000 Spiral Point Tap M3 X 0.5

Product Description

The GUHRING 9039660030000 is a spiral point tap designed for through-hole threading in a wide range of metallic workpiece materials. Built from cobalt high-speed steel and finished with a MolyGlide coating, it delivers improved wear resistance and reduced friction during cutting. The tap features a plug chamfer, 3 flutes, a 6H thread limit class, and a D2/D3 thread limit designation. It produces M3 x 0.5 metric threads and measures 1.941 inches overall in length with a shank diameter of 0.141 inches. Machinists and tool-and-die professionals specify this tap for production environments where thread quality and tool life are critical.

This tap is suited for through-hole threading operations on CNC machining centers, drill presses, and tapping machines. The spiral point geometry pushes chips forward ahead of the cutting edge, making it well suited for through-hole applications rather than blind holes. Compatible materials include aluminum, gray cast iron, malleable iron, non-ferrous metals, spheroidal iron, stainless steel, and steel. It is a right-hand tap used with right-hand threading toolpaths and standard tapping attachments.

Key Features

• M3 x 0.5 metric thread form with 6H class of fit and D2/D3 thread limit
• Cobalt HSS construction for elevated heat and wear resistance
• MolyGlide finish reduces friction and improves chip evacuation
• Spiral point geometry designed specifically for through-hole threading
• 3-flute design balances cutting efficiency with thread quality
• No coolant-through requirement — compatible with external coolant or cutting fluid application

Compatibility

Designed for through-hole threading in aluminum, gray cast iron, malleable iron, non-ferrous metals, spheroidal iron, stainless steel, and steel. Part of the GUHRING Series 3966 spiral point tap line.

Installation Notes

Installation is performed by machinists using a tapping attachment, CNC rigid tapping cycle, or manual tap wrench with appropriate torque control. Ensure the workpiece is securely fixtured and the tap is aligned perpendicular to the hole before engagement. Apply a suitable cutting fluid or tapping oil for the workpiece material to extend tool life and maintain thread quality. Do not use this tap in blind holes, as the spiral point geometry is designed to push chips forward through the workpiece.