Guhring 9008270080040 Spiral Point Tap M8 X 0.75

Product Description

The GUHRING 9008270080040 is a spiral point tap designed for through-hole threading in steel workpieces. Built from cobalt high-speed steel with a bright finish, it cuts M8 x 0.75 metric fine threads to a 6H class of fit with a D3/D4 thread limit. The plug chamfer style makes it well suited for threading through-holes where the tap can pass completely through the material. With an overall length of 80 mm (approximately 3.15 inches) and a shank diameter of 6 mm (approximately 0.24 inches), this tap fits standard tapping chucks and holders used in machine or hand tapping operations. Machinists, toolroom technicians, and maintenance professionals install this tap in production and repair applications.

This tap is intended for through-hole threading applications in steel. The spiral point geometry pushes chips forward ahead of the cutting action, keeping the flutes clear and reducing the risk of chip packing in the hole. The 3-flute, right-hand configuration with a 0.75 mm pitch is commonly used in precision metric fine thread work where a coarser thread pitch is not appropriate for the joint design. Coolant-through is not supported on this tap, so external flood coolant or cutting oil should be applied during use.

Key Features

• M8 x 0.75 metric fine thread form with 6H class of fit
• Cobalt high-speed steel construction for improved heat and wear resistance in steel
• Spiral point design pushes chips forward, suited for through-hole threading
• Plug chamfer allows full thread engagement as the tap passes through the workpiece
• D3/D4 thread limit for consistent tolerance control
• Bright finish, right-hand cut, 3 flutes

Compatibility

Designed as an OEM-style cutting tool replacement for through-hole tapping operations in steel, compatible with standard tapping chucks and holders accepting a 6 mm shank diameter. Part of GUHRING Series 827.

Installation Notes

This tap is installed by machinists or toolroom technicians in drill presses, CNC machining centers, or manual tapping fixtures. Secure the workpiece before starting and ensure the pilot hole diameter is correct for the M8 x 0.75 thread form per standard tap drill charts. Apply cutting oil or flood coolant to the tap and workpiece during the threading operation. Do not reverse the tap under load without confirming the machine or handle setup is rated for reversing to avoid tap breakage.