If you have the long Bel Air style arm rest, new or old, this will get the job done. 
This is a set of 6 screws to do ONE armrest and bracket. There are 4 for the bracket and 2 for the armrest itself. These are for the long Bel Air style armrest in a 57 Chevy. The bracket is NOT included, it is there for display purposes. These are the correct diameter and thread pitch as the original. 
To accommodate your needs, we have other listings with qty's to allow for you to do two or four armrests. Again, this listing will complete one armrest assembly.