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Union Butterfield UTD 1010502
Union Butterfield 6006899 1578 Spiral Point STI Tap, #10-32 Thread, 2 Flutes, 2B/3B/H2 Class of Fit, Plug Chamfer, Right Hand Cutting, UNF Thread
Factory Order
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
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
Specifications
ApplicationThrough Hole Applications
Chamfer TypePlug
Class of Fit2B/3B/H2
Cutting DirectionRight Hand
Finish/CoatingBright
MaterialHSS
Measurement SystemImperial
Number of Flutes2
Overall Length2-1/2 in
Series1578
Shank Diameter0.255 in
Square Size0.191 in
Tap Drill Size#21
Thread Length1 in
Thread Size#10-32
Thread StandardUNF
TypeSpiral Point
Catalog
