Spiral Point Tap: #6-32 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel

General purpose spiral-point taps are a good choice for tapping through holes in a wide range of materials. They install into CNC machines to push chips in front of the tap, so they're ideal for through holes. High Speed Steel taps offer good wear resistance, have some flexibility, and can absorb some shock and vibration. Black Oxide coating improves lubricity to reduce friction, minimize heat buildup, and improve wear resistance, chip flow, and tool life. Black oxide is a good choice for general purpose use and working with soft materials, such as plastic and low-carbon steel, and should not be used with aluminum and nonferrous metals. Square shanks have a square top end to the shank, allowing them to fit hand tap wrenches or spanners.