This Hertel Straight Flute Tap is designed for precision threading applications with its 7/8-9 UNC thread specification. Featuring 4 flutes with a bottoming chamfer design, this tap delivers clean and accurate threads with a 3B class of fit. Crafted from high-quality high-speed steel with a bright/uncoated finish, it offers excellent durability and performance for professional threading tasks. The tap measures 4-11/16" in overall length and is designed for right-hand threading operations. This straight flute hand tap is ideal for creating internal threads in pre-drilled holes, making it an essential tool for machinists, mechanics, and manufacturing professionals. The straight flute design helps with chip evacuation when working with various materials, ensuring consistent threading results in your projects.