Guhring 9044055158750 Spiral Point Tap 5/8-18 Unf

Product Description

The GUHRING 9044055158750 is a spiral point plug tap designed for through-hole threading in a wide range of ferrous and non-ferrous materials. Built from cobalt high-speed steel with an oxide finish, this tap handles demanding applications where standard HSS tooling falls short. It cuts a 5/8-18 UNF right-hand thread to a 2B/3B class of fit with an H5 thread limit, making it suitable for precision threading in production and maintenance environments. With 4 flutes and a plug chamfer, it is engineered to push chips ahead of the cut, keeping the flutes clear during through-hole operations. Licensed machinists and tool-and-die tradespeople are the primary users of this tap.

This tap is suited for through-hole threading operations across a broad range of materials including aluminum, aluminum alloys, cast iron, free cutting steel, heat treatable steel, stainless steel, structural steel, sulfured steel, case hardened steel, and tool steel. It is appropriate for both production machining and maintenance repair operations where a 5/8-18 UNF thread form is required. The cobalt construction provides added wear resistance and heat tolerance compared to standard M2 HSS taps, making it a practical choice for harder or abrasive materials.

Key Features

• Cobalt high-speed steel construction for improved wear and heat resistance over standard HSS
• Oxide finish for added lubricity and corrosion resistance during storage and use
• 4-flute spiral point design pushes chips forward, optimized for through-hole threading
• Plug chamfer provides gradual thread engagement for reduced torque at entry
• H5 thread limit and 2B/3B class of fit for consistent, precise thread geometry
• Right-hand thread direction, no coolant-through requirement

Compatibility

Designed for through-hole threading of 5/8-18 UNF threads in aluminum, aluminum alloys, cast iron, free cutting steel, heat treatable steel, stainless steel, structural steel, sulfured steel, case hardened steel, and tool steel. Part of GUHRING Series 4405.

Installation Notes

This tap is installed by machinists using a tap handle, tapping head, or CNC tapping attachment. Before use, ensure the workpiece is securely fixtured and the pilot hole diameter is correct for a 5/8-18 UNF thread. Apply cutting fluid appropriate for the workpiece material to extend tool life and improve thread quality. Do not reverse the tap under load without confirming the drive setup is configured for right-hand threads.