Union Butterfield®

Union Butterfield® 6006929 1572 Straight Flute STI Tap, 1/4-28 Thread, 3 Flutes, 3B/H3 Class of Fit, Bottoming Chamfer, Right Hand Cutting, UNF Thread

25821138 MFG #: 6006929
$0.00 / Each
Item currently not in stock. Lead time based upon availability from the manufacturer.
Union Butterfield® 6006929 1572 Straight Flute STI Tap, 1/4-28 Thread, 3 Flutes, 3B/H3 Class of Fit, Bottoming Chamfer, Right Hand Cutting, UNF Thread
  • Type: Straight Flute
  • Series: 1572
  • Measurement System: Imperial
  • Size: 1/4-28
  • Thread Size: 1/4-28
  • Thread Standard: UNF
  • Thread Length: 1-1/8
  • Overall Length: 2-23/32
  • Number of Flutes: 3
  • Chamfer Type: Bottoming
  • Cutting Direction: Right Hand
  • Class of Fit: 3B/H3
  • Shank Diameter: 0.318
  • Tap Drill Size: #3
  • Square Size: 0.23799999999999999, 0.238
  • Material: HSS
  • Finish: Bright
  • Finish/Coating: Bright
Union Butterfield® STI Tap, Straight Flute, Series: 1572, Measurement System: Imperial, 1/4-28 Thread, UNF Thread Standard, 1-1/8 in Thread Length, 2-23/32 in Overall Length, 3 Flutes, Bottoming Chamfer, Right Hand Cutting Direction, Class of Fit: 3B/H3, 0.318 in Shank Diameter, #3 Tap Drill, 0.238 in Square, HSS, Bright
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  • Designed for use in aluminum, magnesium, and other nonferrous materials where taps of this
  • Designed for use in
  • Taps suitable for ot
  • 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
  • STI taps are dimensi
  • For a particular size and pitch the lower H-Limit number is suggested for class 2B and 3B
  • For a particular siz
  • Through or blind hol
  • Through or blind hole
Designed for use in aluminum, magnesium, and other nonferrous materials where taps of this type are most commonly used
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
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
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
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 or blind hole
Through or blind hole