The Hertel Extension Tap is a precision threading tool designed for creating #10-32 UNF threads with exceptional accuracy. Featuring 2 flutes and an H3 design, this spiral point tap efficiently pushes chips forward, making it ideal for through holes. Crafted from high-quality high speed steel with a bright/uncoated finish, this tap delivers reliable performance and durability in various threading applications. The plug chamfer design facilitates easier starting and produces complete threads, while the extended 6" overall length allows access to deeper holes and recessed areas. This tap produces threads to 2B and 3B class of fit specifications, ensuring proper thread engagement for fasteners. Perfect for maintenance professionals, machinists, and manufacturing operations requiring precise thread formation in hard-to-reach areas. Part #G837595 from Hertel provides the reliability needed for consistent threading results.