Steel nuts have internal machine threads which are assembled with machine threaded bolts and screws. Steel nuts are very strong and Flange lock nuts,Flange serrated lock nuts,self-locking nuts,hex nuts etc are our popular types. Different sizes and colors could be customized. Most popular sizes are M3,M4 and M5 sizes. If you need other sizes,we could produce them for you as well. If you need special packing service including special package boxes, it is also ok for us. Any questions or demand, please feel free to contact us.
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