So, What Size Is a M3 Bolt Anyway?
If you're digging through a junk drawer or looking at a parts list and wondering what size is a m3 bolt, you've probably realized that metric hardware naming is actually pretty straightforward once you get the hang of it. Unlike the somewhat chaotic world of imperial sizing (where you have to deal with fractions of an inch and weird "gauge" numbers), the metric system tells you exactly what you're looking at right in the name. ...