Quoted from High_End_Pins:When it comes to plated leg bolts I find them problematic very often. They look great
But the threads are usually overplated
They are often only good for one use
Have you ever considered Titanium Nitride coating? Its a bright shiny gold and super durable. Plus its so thin that it wouldn't matter if the threads got coated. Probably cost about $3.25 a bolt though. Not sure if thats high compared to plating or not. I do coatings like this at work if you're interested I could run some samples for you. I've been trying to figure out what some good pinball parts for coating would be, as most parts you'd want done (wireforms, armor, ect) probably wouldn't work do to just the restrictions of the process.