X2 on Reliable Plating. I dropped off every nut, bolt and bracket I had at the time…but I haven't gotten any yellow yet. They hand string each piece rather than the bulk tumbler method. I’m not sure how happy they were afterwards based on the original quote but they’ll get my money when I go back for more.My company uses Reliable Plating in Bridgeport CT for parts in the equipment we make. I haven't got around to doing 40 parts yet, but they do great work. Make sure you specify yellow