The TAP SP-R (020) 5/16-18 H3P 3F from Field Tool Supply is a high-quality tap designed for precision threading. With a 5/16-18 thread size, it is suitable for a variety of applications requiring internal threads. Made from premium steel, this tap offers excellent durability and wear resistance. The H3P designation indicates a specific taper and flute design that enhances cutting efficiency, while the 3-flute design improves chip clearance. Perfect for automotive and manufacturing industries, this tap meets all relevant quality standards for reliable performance.