The Tap F/SPI (016) 1/4-20 B from Field Tool Supply is a high-quality tap designed for creating internal threads in various materials. With a thread size of 1/4-20, this tap is ideal for use in metalworking and woodworking applications. Constructed from durable materials, it ensures longevity and reliable performance. The tap features a standard design compatible with most tap wrenches and is suitable for both professional and DIY projects. Its precision-engineered threads meet industry standards, ensuring accurate and clean results in every application.