Guhring 9039280127000 Spiral Point Tap 1/2-13 Unc Tin

Product Description

The GUHRING 9039280127000 is a spiral point tap designed for through-hole threading in non-ferrous metals. It cuts a 1/2-13 UNC thread to a 2B class of fit using three flutes and a plug chamfer that guides the tap smoothly into the workpiece. The tap is manufactured from HSS-E cobalt high-speed steel and carries a TiN (titanium nitride) coating that extends tool life and reduces friction at the cutting edge. With an overall length of 3.382 inches and a thread length of 1.5 inches, this tap suits standard machine tapping operations in CNC machining centers, drill presses, and tapping heads used by machinists and maintenance professionals.

This tap is suited for through-hole threading applications in non-ferrous materials such as aluminum, brass, and copper alloys. Its spiral point geometry pushes chips forward ahead of the cutting zone, making it effective in production environments where chip evacuation is critical. The plug chamfer provides 3 to 5 threads of lead-in, which is appropriate for through-holes where the tap can pass fully through the material. It is used in job shops, manufacturing facilities, and industrial maintenance settings where consistent thread quality and repeatable fit are required.

Key Features

• Spiral point geometry pushes chips forward for clean through-hole threading
• HSS-E cobalt construction provides increased hardness and heat resistance over standard HSS
• TiN coating reduces friction and extends cutting life
• Plug chamfer with 3 to 5 thread lead-in for guided entry into through-holes
• 2B class of fit for standard fastener thread tolerance
• Thread limit H5/H6 for controlled oversize tolerance

Compatibility

Designed for through-hole threading of 1/2-13 UNC threads in non-ferrous metals. Compatible with standard tapping chucks, rigid tap holders, and floating tap adapters that accept a 0.367-inch shank diameter.

Installation Notes

This tap should be installed by a qualified machinist following standard tapping procedures. Ensure the machine spindle and workpiece fixture are fully secured before beginning the tapping cycle. Use appropriate cutting fluid or tapping lubricant rated for the workpiece material to protect the cutting edge and maintain thread quality. Inspect the tap for wear or chipping before each use and replace if damage is present.