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Union Butterfield® 6006907 1578 Spiral Point STI Tap, #8-32 Thread, 2 Flutes, 2B/3B/H2 Class of Fit, Plug Chamfer, Right Hand Cutting, UNC Thread

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Features

  • Designed for use in aluminum, magnesium, and other nonferrous materials where taps of this type are most commonly used
  • Taps suitable for other materials can be furnished on request
  • STI taps are dimensionally oversize and utilize a larger tap drill size so that the thread they produce will accept a helical coil wire screw thread insert of the same nominal size and pitch
  • For a particular size and pitch the lower H-Limit number is suggested for class 2B and 3B threads, while the higher H-Limit is suggested for class 2B
  • Through hole

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Description

Union Butterfield® STI Tap, Spiral Point, Series: 1578, Measurement System: Imperial, #8-32 Thread, UNC Thread Standard, 15/16 in Thread Length, 2-3/8 in Overall Length, 2 Flutes, Plug Chamfer, Right Hand Cutting Direction, Class of Fit: 2B/3B/H2, 0.22 in Shank Diameter, #29 Tap Drill, 0.165 in Square, HSS, Bright