Spiral Flute Tap: 7/16"-14 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer

General purpose spiral-flute taps are a good choice for standard tapping applications. They install into CNC machines to eject chips upward and out of holes, so they're ideal for blind holes. Vanadium High Speed Steel taps provide more abrasion resistance and wear resistance than standard high-speed steel. They're suitable for use on hard metals such as stainless steel and high-silicon aluminum. 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.