Thread: Anyone here broken off a rack-mount bolt? Have remedy?
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Old 10-25-22, 12:07 AM
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mstateglfr 
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Use a drill bit that is smaller than the 5mm wide hole.
I used a reverse screw drill bit to extract a broken rear dropout screw which is like 2mm wide and the threads in the frame were fine. It was probably a 1mm drill bit.
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