Union Butterfield® 1010502 1578 Spiral Point STI Tap, #10-32 Thread, 2 Flutes, 2B/3B/H2 Class of Fit, Plug Chamfer, Right Hand Cutting, UNF Thread

25821275 MFG #: 1010502
  • Type: Spiral Point
  • Series: 1578
  • Measurement System: Imperial
  • Size: #10-32
  • Thread Size: #10-32
  • Thread Standard: UNF
  • Thread Length: 1
  • Overall Length: 2-1/2
  • Number of Flutes: 2
  • Chamfer Type: Plug
  • Cutting Direction: Right Hand
  • Class of Fit: 2B/3B/H2
  • Shank Diameter: 0.255
  • Tap Drill Size: #21
  • Square Size: 0.191
  • Material: HSS
  • Finish: Bright
  • Finish/Coating: Bright
Union Butterfield® STI Tap, Spiral Point, Series: 1578, Measurement System: Imperial, #10-32 Thread, UNF Thread Standard, 1 in Thread Length, 2-1/2 in Overall Length, 2 Flutes, Plug Chamfer, Right Hand Cutting Direction, Class of Fit: 2B/3B/H2, 0.255 in Shank Diameter, #21 Tap Drill, 0.191 in Square, HSS, Bright
  • Designed for use in aluminum, magnesium, and other nonferrous materials where taps of this
  • 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
  • For a particular size and pitch the lower H-Limit number is suggested for class 2B and 3B
  • Through hole
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