Quote Originally Posted by fender3x View Post
They look like they began life as three-a-side and were just cut down to (almost) fit. But why would anyone do that if you can buy them to fit? Very strange.
Certainly not a 3+3 set as the tuner positions relative to the centre would be reversed on three of them (plus you'd have four 'outer' tuners with one half screw hole and and one full screw hole).

Maybe they do make them as in your example and then trim them down to size. I'd have thought they'd have had three types of stamped outer enclosures, but maybe making them all the same and then chopping is cheaper. Whatever they do, they don't do it very accurately as I find they often don't seem to be the same size, or at least the post is in a slightly different position relative to the surround which effectively makes them a bit wonky. Sometimes you can move the four middle ones around to find a better fit, but it might be that some filing/grinding is the easiest option.