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Union Butterfield UTD 1010453
Union Butterfield 6006925 1572 Straight Flute STI Tap, 1/4-20 Thread, 3 Flutes, 3B/H3 Class of Fit, Bottoming Chamfer, Right Hand Cutting, UNC Thread
Factory Order
Union Butterfield STI Tap, Straight Flute, Series: 1572, Measurement System: Imperial, 1/4-20 Thread, UNC 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, #7 Tap Drill, 0.238 in Square, HSS, Bright
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 or blind hole
Specifications
ApplicationThrough or Blind Hole Applications
Chamfer TypeBottoming
Class of Fit3B/H3
Cutting DirectionRight Hand
Finish/CoatingBright
MaterialHSS
Measurement SystemImperial
Number of Flutes3
Overall Length2-23/32 in
Series1572
Shank Diameter0.318 in
Square Size0.238 in
Tap Drill Size#7
Thread Length1-1/8 in
Thread Size1/4-20
Thread StandardUNC
TypeStraight Flute
Catalog
