this post was submitted on 12 Apr 2025
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What is this thing?
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My vote is self-tapping sheet metal screw that had the end cut off because it was sticking too far into whatever it was screwed into.
Only the part of the screw that touches the two (or more) pieces of sheet metal actual does anything.
Person should have used a rivet.
Could easily have been stuck in the tire and then ground down on the road.
But the second one wasn't found in a tire. Someone probably cut off a bunch in the same place.