This is a follow-up question to Seized nut & bolt - difficult to access

What happened - or what did I do wrong - for this bolt to lose its thread in this way?

Is it simply doing it up too tightly? Is that all it is?

Bolt with worn thread


1 Answer 1


It looks to me like it has been over-tightened, beyond the point of failure of the bolt.

  • 4
    I would completely agree. Looks like the bolt, while pretty was probably a cheap grade 1 bolt which couldn't handle any kind of torque, might have been the nut, or probably a combination of the two. Apr 4, 2016 at 16:12
  • 2
    Yeah, I've done that. Another proud moment. Apr 4, 2016 at 16:48

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