Guhring 9039160025150 Spiral Point Tap 3-48 Unc

Product Description

The GUHRING 9039160025150 is a spiral point tap designed for through-hole threading in steel and similar materials. It cuts a 3-48 UNC right-hand thread with 3 flutes and a plug chamfer that eases entry and distributes cutting load across multiple teeth. The tap is manufactured from HSS-E cobalt high-speed steel and carries a TiN (titanium nitride) coating that reduces friction and extends tool life in production threading operations. At 1.811 inches overall length with a 0.5 inch thread length and a shank diameter of 0.141 inches, this tap is sized for small-fastener work where precision and consistency are critical. Thread limit is H2/H3, class of fit is 2B.

This tap is suited for threading through-holes in steel components where chip evacuation is a priority. The spiral point design pushes chips forward ahead of the tap rather than packing them in the flutes, making it well-suited for production environments and CNC tapping cycles. It is commonly used by machinists, tool-and-die technicians, and maintenance professionals working with small 3-48 fastener applications in light to medium steel. Coolant-through is not supported on this tap, so flood or mist coolant at the outside is the standard approach.

Key Features

• 3-48 UNC thread form, right-hand cut, class of fit 2B
• Spiral point geometry pushes chips forward for clean through-hole threading
• HSS-E cobalt substrate improves heat and wear resistance over standard HSS
• TiN coating reduces friction and increases tool life in steel applications
• Plug chamfer provides stable entry and distributes cutting forces
• Thread limit H2/H3 for consistent tolerance control

Compatibility

Designed for through-hole threading applications requiring a 3-48 UNC right-hand thread in steel. Series 3916 tap compatible with standard 3-48 tap holders and collet-style tapping chucks sized for a 0.141-inch shank diameter.

Installation Notes

This tap should be installed by a qualified machinist or maintenance technician using a properly sized tap holder or tapping head. Always secure the workpiece and ensure the tap is aligned perpendicular to the hole before beginning the threading cycle. Use appropriate cutting fluid or flood coolant directed at the tool exterior, as this tap does not support coolant-through delivery. Follow shop safety procedures and applicable OSHA standards when operating tapping equipment.