Description:

Straight Flute Tap Size: Thread size: 5/16-18 UNC; total length: 100mm / 4" (extra long); thread Length: 23mm / 0.91"; square end width: 5mm / 0.20"; accuracy class: 2B. Straight flute design, downward chip removal. Right hand thread cutting, clear threads, fast tapping with accuracy.. High-speed steel 6542: High-speed steel 6542 has high hardness, good wear resistance, is not easy to deform, and has a long service life. It is heat-resistant and maintains stability in high temperature environments. It is characterized by only a matrix without any coating and is suitable for general thread tapping.. Applications: Suitable for processing through holes or shallow blind holes . Used for drilling and tapping aluminum, stainless steel, copper, hard plastics, etc.. Use with tapping oil to get higher quality threads and more durable taps.. Easy to Use: Used on drilling machines, tapping machines, CNC and milling machines. Recommended feed rate: general steel: 6-15m/min; harder steel: 5-10m/min; stainless steel: 2-7m/min; cast iron: 8-10m/min..