The Hertel Extension Tap is a precision threading tool designed for creating internal threads in hard-to-reach areas. This #6-32 UNC tap features 2 flutes and an H3 bright/uncoated finish for optimal performance. Crafted from high-speed steel, it offers excellent durability and cutting capability. The spiral point design (also known as a gun tap) pushes chips forward, making it ideal for through holes. With a plug chamfer and 4" overall length, this tap provides the reach needed for challenging applications. The 2B class of fit ensures standard tolerance threads suitable for most general-purpose fastening needs. This extension tap is manufactured by MSC Industrial under the trusted Hertel brand (part #G837620). Perfect for professional machinists and fabricators who need reliable threading tools for production environments.