Guhring 9039460254000 Spiral Point Tap 1-8 Unc Ticn

Product Description

The GUHRING 9039460254000 is a spiral point tap designed for through-hole threading in a wide range of materials. Built from cobalt high-speed steel and finished with a TiCN (titanium carbonitride) coating, it delivers improved wear resistance and heat tolerance compared to standard HSS taps. The plug chamfer eases entry alignment, while the 4-flute spiral point geometry pushes chips forward ahead of the cutting zone, keeping threads clean during production runs. Overall length is 5.125 inches with a shank diameter of 0.8 inches. The 1-8 UNC thread form and 2B class of fit make this tap suitable for general-purpose fastener applications across fabrication and maintenance work. Installed by machinists, toolroom technicians, and maintenance mechanics.

This tap is rated for through-hole threading in a broad material range including aluminum, gray cast iron, malleable iron, spheroidal iron, non-ferrous metals, stainless steel, and steel. Its cobalt substrate and TiCN finish make it particularly effective where cutting temperatures run higher, such as in stainless steel and harder steel alloys. The right-hand thread direction and H6/H7 thread limit place it within standard tolerances for most UNC 1-8 threaded fastener fits encountered in general manufacturing, repair, and fabrication environments.

Key Features

• TiCN coating increases surface hardness and reduces friction for longer tool life in abrasive materials
• Cobalt HSS construction handles elevated cutting temperatures better than standard M2 HSS
• Spiral point geometry drives chips forward, preventing chip packing in through-hole applications
• Plug chamfer provides guided entry and distributes cutting load across multiple leading threads
• H6/H7 thread limit and 2B class of fit meet common UNC tolerance requirements
• Right-hand thread direction compatible with standard tapping equipment and CNC machines

Compatibility

Designed for through-hole threading operations producing 1-8 UNC, 2B class of fit threads. Material compatibility includes aluminum, gray cast iron, malleable iron, spheroidal iron, non-ferrous metals, stainless steel, and steel, as listed in the product specifications.

Installation Notes

This tap is installed by machinists or toolroom technicians using a tapping head, CNC machining center, or hand tap wrench rated for the shank diameter. Ensure the workpiece is securely fixtured and that the tap is aligned perpendicular to the hole before engagement. Use an appropriate cutting fluid for the workpiece material, particularly when tapping stainless steel or cast iron. Do not reverse the tap under load without first relieving chip pressure to avoid breakage.