Combination Drill & Thread Mills, Thread Size: 5/16-18 , Finish Coating: Bright/Uncoated MPN:820654

Combination drill and thread mills by Harvey Tool are precision cutting tools designed for creating internal threads in a single pass, offering greater efficiency compared to traditional tapping processes. Their combination of split point geometry and sharp flutes enable smooth starts, eliminating the need for pre-drilling, while the bright/uncoated finish ensures superior edge retention and corrosion resistance. These thread mills are ideal for machining aircraft components or high-performance fasteners where quality and reliability are critical, delivering precision threads in various materials such as aluminum, stainless steel, titanium, and hardened steel with ease.