Union Butterfield® 1010507 1578 Spiral Point STI Tap, Imperial, 1/4-20 Thread, 2 Flutes, 2B/3B/H3 Class of Fit, Plug Chamfer, Right Hand Cutting, UNC Thread

25821299 MFG #: 1010507
  • Brand: Union Butterfield®
  • Type: Spiral Point
  • Series: 1578
  • Measurement System: Imperial
  • Size: 1/4-20
  • Thread Standard: UNC
  • Thread Length: 1-1/8
  • Overall Length: 2-23/32
  • Number of Flutes: 2
  • Chamfer Type: Plug
  • Cutting Direction: Right Hand
  • Class of Fit: 2B/3B/H3
  • Shank Diameter: 0.318
  • Tap Drill Size: #7
  • Square Size: 0.23799999999999999
  • Material: HSS
  • Finish: Bright
Union Butterfield® STI Tap, Spiral Point, Series: 1578, Measurement System: Imperial, 1/4-20 Thread, UNC Thread Standard, 1-1/8 in Thread Length, 2-23/32 in Overall Length, 2 Flutes, Plug Chamfer, Right Hand Cutting Direction, Class of Fit: 2B/3B/H3, 0.318 in Shank Diameter, #7 Tap Drill, 0.238 in Square, HSS, Bright