As long as it meets the minimum head height, it's OK if the diameter is too large to fit in the rivet gauge. (That's assuming it isn't so large in diameter that the head is starting to crack.)On the subject of acceptable rivets, I'm wondering is it ok if you have a properly formed shop head that is "overdriven" (won't fit in the rivet gauge), but still meets the minimum head height? Hope that makes sense.
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