Guhring 9039710048260 Spiral Flute Tap 10-32 Unf

Product Description

The GUHRING 9039710048260 is a spiral flute tap designed for threading blind holes in aluminum and non-ferrous materials. Built from cobalt high-speed steel and finished with a MolyGlide proprietary coating, this tap delivers reduced friction and improved chip evacuation in demanding tapping operations. It cuts a 10-32 UNF right-hand thread to a 2B class of fit with H3/H4 thread limits. The 45-degree helix angle drives chips up and out of the hole, making it well suited for the short, interrupted cuts common in blind-hole applications. Machinists and maintenance technicians working with aluminum components will find this tap a direct-fit solution for production and repair work.

This tap is intended for blind-hole threading in aluminum, aluminum alloy, and general non-ferrous workpiece materials. The modified bottoming chamfer allows threading closer to the bottom of a blind hole compared to a plug chamfer, which is useful when thread engagement depth is limited. With 2 fast-spiral flutes and an overall length of 2.382 inches, it is sized for use in standard tap handles, CNC tapping heads, or drill press setups. It fits within the GUHRING Series 3971 product family.

Key Features

• 10-32 UNF thread form, 2B class of fit, H3/H4 thread limits
• Modified bottoming chamfer for threading close to the bottom of blind holes
• Cobalt construction provides increased hardness and heat resistance compared to standard HSS
• MolyGlide coating reduces friction and built-up edge during tapping
• 45-degree right-hand spiral flute promotes upward chip evacuation in blind holes
• Right-hand thread direction, no coolant-through requirement

Compatibility

Designed for blind-hole threading in aluminum, aluminum alloy, and non-ferrous materials. Rated for primary workpiece material code N. No specific machine model compatibility was stated in the product data.

Installation Notes

Installation is performed by machinists or maintenance technicians using a standard tap handle, tapping fixture, or CNC machine with rigid or floating tap holder. Always ensure the workpiece is securely clamped and the tap is aligned perpendicular to the drilled hole before engagement. Power down or de-energize any CNC or drill press spindle before changing tooling. Use an appropriate cutting fluid or tapping compound for aluminum to extend tool life and improve thread finish.