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PrettyMuchAMess OP t1_iy6k8oj wrote

There's not, there's only locking washers. Basically a metal ring with with slots cut out radially and pressed on that are set towards the outside, that hold in place 2 plastic sleeves that act as a bearing. Those are also pressed in pretty hard and I had to hammer the outer one it to get it to seat properly.

This is all covered by a plastic cap that is easy to pry out and appears to have little mechanical strength.

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themadevil t1_iy6lf52 wrote

If I'm understanding correctly, those are called speed nuts, and shouldn't be used for anything taking forces as high as an exterior wheel would have. It does depends on if the wheel has anything else holding it on, though.

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