The Hertel Extension Tap (Part #R867179) is a precision threading tool designed for professional machining applications. This 3/4-10 tap features 3 flutes with an H3 tolerance and bright/uncoated finish for optimal performance. Crafted from high-quality high speed steel, this spiral point extension tap delivers reliable cutting action and extended tool life. The plug chamfer design facilitates smooth thread initiation, while the generous 8" overall length provides excellent reach for deep hole applications. This extension tap is ideal for creating internal threads in through holes where chips need to be pushed forward. Perfect for manufacturing facilities, machine shops, and maintenance departments requiring precise threading capabilities. The spiral point geometry reduces cutting torque and improves chip evacuation, making this Hertel tap an essential addition to your threading tool collection.