Taper Shank Drill Bit: 1.3125" Dia, 4MT, 118 &deg MPN:010084AW

A thread forming tap with size #4-40 UNC, class of fit 3B, bottoming type modified, made of powdered metal high-speed steel, and finished bright is precision cutting equipment designed for various applications. Its key characteristic is its ability to form threads in pre-drilled holes without having to remove any material from the hole itself. This thread forming tap works by cold working the hole's edge, creating a mushroom-shaped rib that contracts and forms a ring of threaded material. This method prevents overstressing and allows for higher quality threads in thin materials or blind holes. The class of fit 3B ensures an excellent fit for threads. Additionally, this tap is made from powdered metal high-speed steel, which provides wear resistance, durability, and heat-resistance, making it suitable for a variety of applications such as automotive, aircraft, and general machining industries. Thread forming taps are widely used in situations where it's impractical to thread the entire hole, or where starting a thread is difficult due to limited access or the use of thin materials. By using thread-forming technology, it eliminates the need for pre-threaded inserts or specialized hardware. SGS can provide customers with high-quality thread forming taps that meet or exceed industry standards. Our experienced team of engineers can work with customers to design and manufacture customized thread forming taps to their exact specifications. With our state-of-the-art machining capabilities and strict quality control procedures, we ensure that every product meets or exceeds customer requirements.