seacoast

I have been to 2 or 3 real hardware stores.  They could not help.  I have attached pics of where the bolt goes.  This thread mentioned a pivot bolt but I don't know where that goes on the vice.    The only thing stamped on this vise is a large 6.  No other stamping or nameplates.  

Thanks for the responses.  

Can anyone tell me the name of that bolt and where to buy one?  Thanks 

I have a 6'' bench vise that closes and does not open.  same issue discussed here.  There is a bolt in the bottom of the vise that is missing.  I have tried to replace it but can't find one.   thank you