Like many Asian 9X20 lathe users, I grew tired of using a wrench to tighten and loosen the tailstock locking nut. The locking bolt is a Metric 8mm-1.25mm bolt 4 inches long. The nearest sized Imperial bolt would be a 4 inch long 5/16 X 20 tpi bolt. The 20 tpi threads are just a little coarser...
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