Guhring 9028790180070 Spiral Point Tap M18 X 1.5 Cobalt

Product Description

The GUHRING 9028790180070 is a spiral point tap designed for through-hole threading in metric fine applications. Built from cobalt high-speed steel with an oxide finish, this plug-chamfer tap is engineered for cutting threads in stainless steel and steel workpieces where toughness and heat resistance are critical. The 4-flute spiral point geometry pushes chips forward ahead of the cut, keeping the flutes clear during through-hole operations. It carries a 6H thread tolerance class with a D4/D5 thread limit, conforming to Metric Fine standards at M18 x 1.5. Licensed machinists and tool-and-die technicians will find this tap well-suited for production and maintenance threading work.

This tap is intended for through-hole threading in M18 x 1.5 Metric Fine applications. It is appropriate for use in stainless steel and steel materials where cobalt tooling is specified to handle elevated cutting temperatures and work-hardening tendencies. With a 110 mm overall length and a 14 mm shank diameter, it fits standard tap holders and chucks in both manual and CNC tapping setups. The plug chamfer makes it suitable for starting threads from the beginning of a pre-drilled through-hole.

Key Features

• M18 x 1.5 Metric Fine thread form with 6H class of fit and D4/D5 thread limit
• Cobalt HSS construction for improved heat resistance and durability in stainless steel and steel
• 4-flute spiral point design pushes chips forward, ideal for through-hole threading
• Oxide finish provides mild lubricity and corrosion resistance during cutting operations
• Plug chamfer allows threading from the start of a through-hole without a starting chamfer requirement
• Right-hand thread direction, no coolant-through capability

Compatibility

Designed for through-hole threading in stainless steel and steel workpieces. Fits standard tap holders and chucks accepting a 14 mm shank. Part of the GUHRING Series 2879 tap line.

Installation Notes

This tap should be installed and operated by qualified machinists or maintenance technicians familiar with tapping procedures and tooling standards. Ensure the workpiece is securely fixtured and that the correct tap drill size for M18 x 1.5 has been used before tapping. Apply appropriate cutting fluid for the material being threaded, particularly when working with stainless steel. Inspect the tap for wear or chipping before each use and replace if thread quality is compromised.