The TAPS SP-L(20) 5/16-40 H3P by Field Tool Supply is a specialized tap designed for creating 5/16-40 threads. Constructed from high-speed steel, it provides exceptional strength and longevity, making it ideal for demanding applications. The H3P tolerance ensures a precise fit, suitable for high-precision work. This tap is engineered for efficient cutting and chip removal, enhancing productivity during use. Perfect for both professional machinists and hobbyists, it adheres to industry standards, ensuring reliable performance across various materials.