Guhring 9008270080030 Spiral Point Tap M8x0.5 Cobalt

Product Description

The GUHRING 9008270080030 is a spiral point tap designed for through-hole threading in metric fine applications. Built from cobalt high-speed steel with a bright finish, it produces M8 x 0.5 threads to a 6H class of fit with a D3/D4 thread limit. The plug chamfer lead eases entry into the cut, and three flutes channel chips forward ahead of the tap during the threading stroke. With an overall length of 80 millimeters and a 6 millimeter shank diameter, this tap fits standard toolholders used in machining centers, drill presses, and hand tapping operations. Licensed machinists and toolroom technicians are the primary users.

This tap is rated for threading steel workpieces and is suited to through-hole applications where chip evacuation ahead of the cutting edge is an advantage over a spiral flute design. The M8 x 0.5 metric fine pitch is commonly specified in automotive, precision mechanical, and instrumentation assemblies where a finer thread engagement is required compared to standard M8 coarse pitch fasteners. The Series 827 designation identifies the GUHRING product family. Right-hand thread direction is standard. Coolant-through capability is not included in this design, so conventional flood or paste cutting lubricant is appropriate for steel applications.

Key Features

• Cobalt high-speed steel construction for improved heat and wear resistance in steel threading
• Spiral point geometry pushes chips forward, making it well suited for through-hole applications
• M8 x 0.5 metric fine thread form ground to 6H class of fit with D3/D4 thread limit
• Plug chamfer for guided entry and progressive cutting action
• Three flutes with bright (uncoated) finish for standard lubricated steel applications
• Right-hand thread direction, 80 millimeter overall length, 6 millimeter shank diameter

Compatibility

Designed as an OEM-style replacement or direct-use spiral point tap for through-hole M8 x 0.5 metric fine threading operations in steel, compatible with standard toolholders accepting a 6 millimeter straight shank.

Installation Notes

Installation and use should be performed by qualified machinists or toolroom technicians familiar with tapping operations and machine tool safety. Secure the workpiece firmly and ensure the tap is aligned perpendicular to the hole before engaging the cut. Always apply an appropriate cutting fluid or tapping paste rated for steel to extend tool life and improve thread finish. Do not force a tap that has stopped turning freely, as cobalt taps are brittle under torsional overload and may fracture.