Indexable Square-Shoulder End Mill: R390-012A16-11L, 12 mm Cut Dia, 10 mm Max Depth of Cut, 16 mm Dia Cylindrical Shank MPN:5745376

Spiral point taps like this one feature 3 flutes & plugs which provide better chip evacuation preventing glazing, ensuring clean cut threads without rethreading. Its high-speed steel composition allows it to handle higher cutting speeds extending its longevity when machining through hard materials such as cast iron or steel. This class of fit offers excellent alignment when starting or closing a thread reducing the need for adjustments. The 2B/3B finish reduces friction between tap & hole ensuring smooth insertion & withdrawal while eliminating marring on delicate mating components like nuts or washers during assembly operations. Overall, this tool serves well in aerospace, automotive, or electronics industries requiring precision when creating threaded holes or repairs without the risk of thread damage by using damaged tools that compromise tolerance standards.