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Breakage
 Incorrect Tap Selection
Excessive Tapping Torque
Operating Conditions
Tool Conditions
Chipping
Incorrect Tap Selection
Operating Conditions
Wear
Incorrect Tap Selection
Operating Conditions
Tool Conditions
Undersize Pitch Diameter
Incorrect Tap
Damaged Threads
Torn or Rough Threads
Chamfer Too Short
Wrong Chamfer Angle
Galling
Chip Packing
Breakage-Solution
 Use correct type of tap-Spiral Point, Spiral Flute
Use larger drill size
Shorten thread length
Use a tap with more thread relief
Reduce tapping speed
Check alignment
Use floating holder
Resharpen tap
Replace tap
Chipping-Solution
Use correct type of tap-Spiral Point, Spiral Flute
Increase chamfer length
Use larger drill size
Reduce tapping speed
Adjust reversing speed
Wear-Solution
Use a High Performance tap
Use tap with a surface treatment
Increase chamfer length
Reduce tapping speed
Use correct coolants
Use larger drill size
Under Size Pitch Diameter-Solution
Use oversize taps
Use proper chamfer angle
Adjust reversing speed
Torn or Rough Threads-Solution
Increase chamfer length
Use a tap with more thread relief
Use correct coolants
Reduce tapping speed
Use larger drill size
Use correct type of tap-Spiral Point, Spiral Flute
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