• 1.Mismatched thread pitch between locknut and spindle threads.
    Examine thread pitch of both locknut and spindle, making sure they match.viedo

  • 2.Warpage at threaded area of spindle.
  • 3.Superficial damage to thread ridges, or fragments thereof.
  • 4.Possible reverse threading of either spindle or locknut.
  • 5.Mismatched thread diameters.
  • 6.External spindle thread diameter too large.
  • 7.Non-standard spindle thread specifications.