A rotary tumbler like the Thumbler's is going to be the easiest to use with the SS pin media which does a great job cleaning. The common vibratory can't handle the weight, as has been mentioned, until you get into very expensive units. You can make a rotary tumbler with basic tools. tons of examples on the web. I have a few fender bolts and washers in mine right now. I've used a variety of scrap bolts, nuts, and screws for media before I got another batch of SS pins and it worked good but didn't get in the tightest spots like the pins do.
I do have a couple Midway brand tumblers and they are OK for a few small parts but the corn media is slooooooow to clean with.