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Resources

Torn or Rough Thread

Chamfer Too Short

  • Increase chamfer length.

 Chip Packing

  • Use spiral pointed or spiral fluted taps.
  • Use larger drill size.

Galling

  • Use thread relieved taps.
  • Reduce land width.
  • Apply surface treatment such as steam oxide or TiN.
  • Use proper cutting lubricant.
  • Reduce tapping speed.
  • Use larger hole size.
  • Obtain proper alignment between tap and work.

Wrong Cutting Angle

  • Apply proper cutting angle.

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Resources