Guhring 9039260127000 Spiral Point Tap 1/2-20 Unf

Product Description

The GUHRING 9039260127000 is a spiral point tap designed for through-hole threading in non-ferrous metals. Built from HSS-E cobalt high-speed steel, it delivers the heat resistance and edge toughness needed for production tapping in materials such as aluminum, brass, and copper. The tap features a plug chamfer with 3 flutes and a right-hand thread direction, producing a 1/2-20 UNF thread to a 2B class of fit. Thread limit is H4/H5. Overall length is 3.382 inches with a 1.5-inch thread length. Machinists and tool-and-die professionals reach for this series when consistent thread quality matters across repeated cycles.

The 9039260127000 is suited for through-hole applications in production and job-shop environments where non-ferrous workpieces are threaded on CNC machining centers, knee mills, or drill presses with tapping capability. The plug chamfer distributes cutting load across several leading threads, making it a practical choice for through-holes where the tap can advance freely past the full thread depth. No coolant-through feature is present, so flood or mist coolant applied externally is standard practice for this tool.

Key Features

• HSS-E cobalt construction for elevated heat resistance and tool life in non-ferrous materials
• Spiral point geometry pushes chips ahead of the tap, keeping flutes clear in through-hole operations
• Plug chamfer with 3 flutes distributes cutting forces for smooth thread entry
• 1/2-20 UNF thread form to 2B class of fit with H4/H5 thread limit
• Bright/uncoated finish — no coating interaction with workpiece material
• Right-hand thread direction; no coolant-through requirement

Compatibility

Designed for through-hole threading in non-ferrous metals. Fits standard 1/2-inch tap holders and collet-style tapping chucks sized for a 0.367-inch shank diameter. Part of the GUHRING Series 3926 spiral point tap line.

Installation Notes

Installation of this tap is performed by qualified machinists following standard tapping procedures. Secure the workpiece fully before operation and confirm spindle speed and feed rate match the material and tap specifications recommended by the manufacturer. Use appropriate cutting fluid or external coolant for the workpiece material to extend tool life and protect thread quality. Inspect the tap for chipping or wear before each use and replace if edge condition is degraded to avoid thread damage or tool breakage.