I've replaced one or two of those over the years. They aren't latching, and they don't have to be "14mm". As long as they fit in the recess on the board and the leads reach the pads, they will work. I measure a 14mm body, like you did, but a 16mm body would fit, and the solder pads are 20mm apart.
Be quick when you replace these. Too much heat will ruin them. You want to really get in and out in an instant with the iron.
Jameco is a great place to get things like this. In fact, they have them right now for about a buck a piece.