Guhring 9008270200050 Spiral Point Tap M20 X 1

Product Description

The GUHRING 9008270200050 is a spiral point tap designed for through-hole threading in steel workpieces. Built from cobalt high-speed steel with a bright finish, this plug-chamfer tap drives chips forward ahead of the cut, making it well suited for production tapping in through-hole applications. It cuts a Metric Fine M20 x 1.00 mm pitch thread to a 6H class of fit, holding the D6/D7 thread limit for consistent, gauged results. The tap features four flutes, a 16.00 mm shank diameter, and a 125.00 mm overall length. Installation is right-hand direction only. Cobalt construction provides elevated heat and wear resistance compared to standard HSS, supporting higher cutting speeds in ferrous materials.

This tap is intended for through-hole threading operations in steel, covering both production and job-shop environments. The plug chamfer — typically 3 to 5 threads of lead — allows the tap to start easily in a pre-drilled hole and is the standard choice for through-hole work on CNC machining centers, knee mills, and drill presses. The M20 x 1 Metric Fine thread specification is common in automotive, hydraulic, and precision mechanical assemblies where a finer pitch is required for stronger thread engagement or adjustment capability in thin-walled components.

Key Features

• Cobalt HSS construction for improved heat resistance and longer tool life in steel
• Spiral point design drives chips forward, keeping flutes clear in through-hole threading
• Plug chamfer for easy starting in through-hole applications
• M20 x 1.00 mm Metric Fine thread form to 6H class of fit, D6/D7 thread limit
• Four flutes for balanced chip evacuation and cutting stability
• Bright finish — no coating applied, suitable for use with standard cutting fluids
• Right-hand cut, no coolant-through feature

Compatibility

Designed for through-hole threading in steel. Fits standard tap holders and chucks sized for a 16.00 mm shank diameter. Series 827 product from GUHRING.

Installation Notes

This tap is installed and operated by machinists using standard tap holders, floating tap chucks, or rigid tapping attachments on CNC or manual machine tools. Always ensure the pre-drilled hole diameter matches the correct tap drill size for an M20 x 1.00 Metric Fine thread before beginning. Use an appropriate cutting fluid or tapping compound for steel to reduce friction and extend tool life. Do not reverse the tap under power without confirming the machine control or holder is configured for reversal to avoid tap breakage.