Guhring 9039920111130 Spiral Point Tap 7/16-14 Unc Tin

Product Description

The GUHRING 9039920111130 is a spiral point tap designed for through-hole threading in metalworking applications. It cuts a 7/16-14 UNC right-hand thread and is manufactured from High-Speed Steel-E-PM (powder metallurgy HSS), which offers greater wear resistance and toughness compared to conventional HSS. The TiN (titanium nitride) coating reduces friction and extends tool life in production environments. With a plug chamfer, 3 flutes, and a 2B class of fit, this tap suits general-purpose tapping operations where precision thread tolerance and consistent performance are required. It is installed by machinists, toolroom technicians, and maintenance professionals working in metal fabrication and manufacturing.

This tap is rated for use in steel, stainless steel, hardened steel, and chilled cast iron, making it suitable for a wide range of industrial and maintenance threading tasks. The spiral point design pushes chips forward ahead of the tap, making it effective for through-hole applications in both manual and CNC machine tapping operations. Thread limit is H5/H6, appropriate for standard 2B thread fit tolerances. This product belongs to GUHRING Series 3992.

Key Features

• 7/16-14 UNC thread size with right-hand thread direction
• High-Speed Steel-E-PM construction for improved wear resistance over standard HSS
• TiN coating reduces friction and extends service life in ferrous materials
• Plug chamfer for general-purpose through-hole thread starting
• 3-flute spiral point design pushes chips forward, ideal for through-hole tapping
• H5/H6 thread limit for consistent 2B class of fit tolerances

Compatibility

Designed for through-hole threading in steel, stainless steel, hardened steel, and chilled cast iron workpieces. Compatible with standard tap holders and CNC tapping heads sized for a 0.323 inch shank diameter. Suitable for use in applications requiring 7/16-14 UNC 2B thread fit.

Installation Notes

This tap should be installed and operated by qualified machinists or toolroom technicians familiar with threading operations and machine setup. Ensure the workpiece is securely fixtured and the spindle is properly aligned before tapping to avoid tap breakage. Use an appropriate cutting fluid or tapping compound for the workpiece material to maximize tool life and thread quality. Follow machine manufacturer guidelines and applicable shop safety procedures when operating tapping equipment.