Industrial 206340 Pulley Taps 7/8-14 UNF GH-4

Industrial 206340 Pulley Taps are right-hand, 7/8-14 UNF pulley-style hand taps (GH-4) engineered to form threads through holes in pulleys and other belt-drive components. The GH-4 designation denotes a four-flute geometry optimized for through-holes, delivering stable alignment and efficient metal removal when cutting UNF threads in common machine shop materials such as steel and aluminum alloys. Made from high-speed steel, these taps typically appear with a bright finish, and catalog variants include tin-coated versions to enhance corrosion resistance in demanding environments. With an overall length of about 4-11/16 inches and a thread-engagement length around 2-7/32 inches, this tool provides the reach and engagement needed to tap through deeper pulley bores while maintaining thread accuracy for 7/8-14 UNF fasteners. Used in maintenance, repair, and assembly of pulley systems, belt drives, hubs, and idler assemblies, these taps are designed for through-holes where the 7/8-14 UNF thread is required, supporting reliable operation across automotive and industrial applications.