Machining tolerances can vary on two identical parts made on the same machine. Let's say for example a rifle barrel. In using this because I am mor familiar with them. You would preferably want the first one machined on the tool set. It will have the tightest tolerances. The tool set used to machine the barrels wares after each barrel machined. Some manufacturers don't use a tool set for more than a hundred barrels. Even with this I would still prefer to have the first barrel off the line. Now if you have two different studs from different manufactures and even if they used the exact same tool sets you have no idea where they were in the number of studs made. If you get ones from the same manufacturer those 16 in the package should of ideally been manufactured one after another. This would give you closer tolerances between the studs.
Sent from the future via a wifi time portal.
