Guhring 9039260035050 Spiral Point Tap 6-40 Unf

Product Description

The GUHRING 9039260035050 is a spiral point tap designed for through-hole threading in non-ferrous metals. It cuts a 6-40 UNF right-hand internal thread and is manufactured from HSS-E cobalt high-speed steel for improved hardness and wear resistance over standard HSS. The plug chamfer allows entry into a through-hole with gradual thread engagement. With 3 flutes and a bright, uncoated finish, this tap is suited for production threading operations where consistent thread quality and dimensional accuracy matter. It meets a 2B class of fit, which covers the majority of general-purpose UNF threaded fastener applications. Licensed machinists, tool-and-die professionals, and maintenance technicians are the primary users.

This tap is applied in through-hole threading of non-ferrous metal workpieces where a 6-40 UNF thread form is required. The 6-40 thread is common in small-diameter fastener applications found in instrument assemblies, electronics hardware, and precision mechanical components. The H2/H3 thread limit designation indicates a controlled oversize tolerance suitable for use with standard 2B-class nuts and fasteners. The 2-inch overall length fits standard tap holders and T-handle drivers used in both manual and machine tapping setups.

Key Features

• HSS-E cobalt construction for improved toughness and heat resistance compared to standard HSS
• Spiral point geometry pushes chips forward through the hole, reducing clogging during through-hole operations
• Plug chamfer provides gradual thread engagement for controlled cutting entry
• H2/H3 thread limit controls finished thread size within 2B class of fit tolerances
• Bright, uncoated finish suitable for use with cutting fluids on non-ferrous materials
• 3-flute design balances chip evacuation with thread form strength in small-diameter tapping

Compatibility

Designed for through-hole threading in non-ferrous metal applications requiring a 6-40 UNF, 2B class of fit internal thread. Fits standard tap holders sized for a 0.141-inch shank diameter.

Installation Notes

This tap is installed by a machinist or maintenance technician using a tap wrench, T-handle, or machine tapping head. The workpiece and tap should be properly aligned before threading begins to avoid tap breakage, which is a significant risk at this small diameter. Apply appropriate cutting fluid for the workpiece material before and during tapping. Remove chips frequently when tapping manually to prevent binding.