Tap Size: 1/4-20 BSW thread, H2 thread tolerance grade. Spiral flute design, upward chip removal. Right hand thread cutting, clear threads, fast tapping with accuracy.. Material and Finish: High speed steel tool is with high hardness and toughness, heat resistance and wear resistance. Features the base substrate without any coatings. Suitable for general purpose thread tapping.. Applications: Suitable for processing blind holes and sticky materials. Great for drilling and tapping aluminum, die steel, stainless steel, bronze, hard plastics, etc.. Easy to Use: Used on drilling machines, tapping machines, CNC and milling machines. Use with tapping oil to get higher quality threads and more durable taps.. Tips: Machine taps are suggested to be used with tap collets with overload protection. Hand use is easy to cause breakage to the tap due to uneven force..
