Guhring 9039250035050 Spiral Point Tap 6-32 Unc

Product Description

The GUHRING 9039250035050 is a spiral point tap designed for through-hole threading in non-ferrous metals. It carries a 6-32 UNC thread form with 3 flutes and a plug chamfer, producing right-hand internal threads to a 2B class of fit. The tap is manufactured from HSS-E cobalt high-speed steel and left in a bright, uncoated finish. Overall length is 2 inches, with a thread length of 0.748 inches and a shank diameter of 0.141 inches. Thread pitch is 0.0313 inches, corresponding to 32 threads per inch. Licensed machinists and tool-and-die tradespeople are the primary installers of this tap in production and maintenance environments.

This tap is suited for threading through-holes in non-ferrous metal workpieces such as aluminum, brass, and copper alloys. The spiral point geometry pushes chips ahead of the tap and out through the exit side of the hole, making it well suited for through-hole applications where chip evacuation is a consistent concern. Thread limit is H3/H4, which provides the tolerance range appropriate for standard 2B fit fastener assemblies. It is a Series 3925 tool from GUHRING and is sold individually.

Key Features

• 6-32 UNC thread form at 32 threads per inch for standard inch-series fastener compatibility
• HSS-E cobalt construction improves hardness and wear resistance over standard HSS
• Spiral point geometry promotes forward chip ejection, reducing tap binding in through-holes
• Plug chamfer provides a gradual thread lead-in suited for most general through-hole applications
• 2B class of fit and H3/H4 thread limit meet standard tolerance requirements for commercial threaded assemblies
• Bright, uncoated finish — no coating buildup that could affect thread tolerance in close-tolerance work

Compatibility

Designed for through-hole threading in non-ferrous metals. Thread form is 6-32 UNC, 2B class of fit, H3/H4 thread limit, compatible with standard inch-series 6-32 fastener assemblies.

Installation Notes

This tap is installed by machinists using a tap wrench, tapping head, or CNC rigid tapping spindle. Secure the workpiece firmly before threading and use an appropriate cutting fluid for the workpiece material to extend tool life and improve thread quality. For through-hole applications, ensure the exit side of the hole is clear to allow chip evacuation. Inspect the tap for wear or chipping before each use and replace at the first sign of thread form degradation to avoid seizing in the workpiece.