Guhring 9039010031750 Spiral Point Tap 5-40 Unc

Product Description

The GUHRING 9039010031750 is a spiral point tap designed for cutting internal threads in through-hole applications. Built from HSS-E cobalt high-speed steel, this tap handles the thermal and mechanical demands of threading steel workpieces at production volumes. It cuts a 5-40 UNC right-hand thread to a 2B class of fit, with a plug chamfer that distributes cutting load across the leading threads for controlled entry. The bright, uncoated finish is standard for general-purpose tapping where additional surface treatment is not required. Three flutes and a spiral point geometry push chips forward through the hole, keeping the cutting zone clear during the pass.

This tap is suited for threading through-holes in steel components where a 5-40 UNC thread form is required. The plug chamfer makes it appropriate for most standard through-hole production and repair work. Machinists and tooling technicians use this size in precision assemblies, fixture work, and light machine component fabrication. The H2/H3 thread limit provides the tolerance control needed to produce 2B-class threads consistently across repeat operations.

Key Features

• HSS-E cobalt construction for improved heat and wear resistance when threading steel
• Spiral point geometry pushes chips forward, suited for through-hole tapping
• Plug chamfer distributes entry load across multiple leading threads
• 5-40 UNC thread form, right-hand, 2B class of fit
• H2/H3 thread limit for consistent tolerance control
• Bright uncoated finish, no additional coating that could affect thread tolerance

Compatibility

Designed for through-hole threading in steel at 5-40 UNC to 2B class of fit. Part of the GUHRING Series 3901 spiral point tap line.

Installation Notes

This tap is installed and operated by machinists or tooling technicians using a tapping head, CNC machine, or manual tap wrench. Ensure the workpiece is securely clamped and the hole is drilled to the correct tap drill diameter before starting. Apply appropriate cutting fluid for the workpiece material to extend tool life and maintain thread quality. Never reverse a broken tap with force — follow standard tap extraction procedures to avoid damaging the workpiece thread.