Guhring 9039460041660 Spiral Point Tap 8-32 Unc Cobalt Ticn

Product Description

The GUHRING 9039460041660 is a spiral point tap designed for through-hole threading operations in a wide range of materials. Built from cobalt high-speed steel and finished with a titanium carbonitride (TiCN) coating, this tap delivers heat resistance and extended tool life in demanding production environments. It cuts an 8-32 UNC thread with a plug chamfer, 3 flutes, a 2B class of fit, and an H3/H4 thread limit. Overall length is 2.125 inches with a shank diameter of 0.168 inches. Machinists, tool and die technicians, and maintenance professionals use this tap in manual and CNC tapping applications.

This tap is suited for through-hole threading in aluminum, gray cast iron, malleable iron, spheroidal iron, stainless steel, steel, and non-ferrous metals. The plug chamfer provides a gradual lead-in, making it appropriate for production runs where a through-hole is accessible from the entry side. The spiral point geometry pushes chips forward through the hole rather than packing them in the flutes, which supports continuous feed in automated setups. It belongs to the Guhring Series 3946 and ships as a single unit.

Key Features

• 8-32 UNC thread form with plug chamfer for gradual thread engagement
• Cobalt HSS construction for elevated heat resistance over standard M2 taps
• TiCN coating reduces friction and wear, extending tool life in ferrous and non-ferrous materials
• 3-flute spiral point design pushes chips forward, suited for through-hole applications
• H3/H4 thread limit, 2B class of fit for standard tolerance threading
• Right-hand cut, no coolant-through requirement

Compatibility

Designed for through-hole threading of 8-32 UNC threads in aluminum, gray cast iron, malleable iron, spheroidal iron, stainless steel, steel, and non-ferrous metals. Part of the Guhring Series 3946 spiral point tap line.

Installation Notes

Install in a tap holder, tapping head, or CNC rigid tap chuck appropriate for the shank diameter. Ensure the workpiece is securely fixtured and the hole is drilled to the correct tap drill size for 8-32 UNC before tapping. Use a compatible cutting fluid or tapping compound for the workpiece material to manage heat and chip evacuation. Never reverse the tap under power without confirming the machine or holder supports synchronized reverse feed.