Guhring 9039090050000 Spiral Flute Tap M5 X 0.80 Tin

Product Description

The GUHRING 9039090050000 is a spiral flute tap designed for blind hole threading in metric coarse thread applications. Built from powdered metal and finished with a titanium nitride (TiN) coating, this tap handles demanding materials including aerospace alloys and stainless steel. It cuts an M5 x 0.80 thread to a 6H class of fit with a D3/D4 thread limit. The three-flute, right-hand spiral design runs at a 40-degree helix angle, which efficiently evacuates chips upward out of the blind hole during the threading operation. The modified bottoming chamfer allows the tap to thread close to the bottom of a blind bore.

This tap is suited for precision threading in aerospace, industrial, and maintenance applications where blind holes in tough materials require a reliable, consistent thread form. The TiN coating reduces friction and improves wear resistance, extending tool life when working in stainless steel and high-strength alloys. It belongs to GUHRING Series 3909 and is packaged individually. Machinists and tool-and-die professionals will find this tap appropriate for CNC machining centers, manual tapping, and production threading operations where metric coarse threads are specified.

Key Features

• M5 x 0.80 metric coarse thread, 6H class of fit with D3/D4 thread limit
• Modified bottoming chamfer for threading close to the bottom of blind holes
• 40-degree right-hand helix angle promotes efficient upward chip evacuation in blind bores
• Powdered metal construction with TiN coating for extended tool life in hard materials
• Rated for aerospace alloys and stainless steel applications
• Right-hand flute and right-hand thread orientation

Compatibility

Designed for blind hole threading in aerospace alloys and stainless steel. Suitable for use with standard M5 tap holders and CNC tooling that accommodates a 0.1940-inch shank diameter. No coolant-through capability; use with surface-applied cutting fluid appropriate for the workpiece material.

Installation Notes

Installation and use of this tap should be performed by a qualified machinist or tooling professional. Secure the tap in a rigid holder sized for the 0.1940-inch shank and verify proper alignment before engagement to avoid tap breakage. Always apply a cutting fluid suitable for the workpiece material, particularly when threading stainless steel or aerospace alloys. Do not reverse the tap under power before the flutes have cleared chips from the hole.