Guhring 9044025127000 Spiral Point Tap 1/2-13 Unc

Product Description

The GUHRING 9044025127000 is a spiral point tap designed for through-hole threading in a wide range of ferrous and non-ferrous metals. Built from cobalt high-speed steel with an oxide finish, this tap handles demanding applications where standard HSS tooling falls short. It cuts a 1/2-13 UNC right-hand thread with a plug chamfer for gradual thread engagement. The H5 thread limit and 2B/3B class of fit make it suitable for standard tolerance threading work across production and maintenance machining environments. With 4 flutes and a spiral point geometry, chips are pushed forward ahead of the tap, keeping the flutes clear during through-hole operations. Licensed machinists and maintenance technicians are the primary users of this tool.

This tap is suited for through-hole threading in aluminum, aluminum alloys, cast iron, free cutting steel, heat treatable steel, case hardened steel, structural steel, sulfured steel, stainless steel, and tool steel. It fits production machining, job shop, and MRO maintenance environments where a reliable 1/2-13 UNC spiral point tap is required. The plug chamfer makes it the preferred choice when the tap needs to start a thread in a through-hole without a bottoming chamfer. Series 4402 from GUHRING is a recognized cobalt tap line intended for medium to difficult materials.

Key Features

• Spiral point geometry pushes chips forward for clean through-hole threading
• Cobalt construction increases heat and wear resistance over standard HSS taps
• Oxide finish provides mild lubricity and corrosion resistance
• Plug chamfer allows gradual thread engagement at hole entry
• H5 thread limit and 2B/3B class of fit for standard tolerance threading
• Right-hand cut, no coolant-through design — suited for manual and CNC tapping with external coolant

Compatibility

Designed as an OEM-style cutting tool replacement for 1/2-13 UNC through-hole tapping applications across aluminum, aluminum alloys, cast iron, free cutting steel, heat treatable steel, case hardened steel, structural steel, sulfured steel, stainless steel, and tool steel workpieces.

Installation Notes

This tap is installed and used by machinists, tool and die makers, and maintenance technicians operating drill presses, mills, or CNC machining centers. Before use, ensure the workpiece is properly secured and the pilot hole diameter matches the required tap drill size for 1/2-13 UNC. Use a tapping fluid or cutting oil appropriate for the workpiece material to extend tap life and improve thread quality. Do not reverse the tap until chips are fully cleared in hand-tapping operations on tough materials.