Just check the micro switches that you have attached to your pushbuttons and joystick. Measure the width of the connections (male opposite of the shown female connectors) and you will know which one(s) you need.
Edit
Oh wait, I just realize what you want, you want to connect the wires with female connectors to the Jamma connector. That is odd, and not advisable, unless you really isolate the female connectors pretty good.
Never seen this done before. Anyway, I checked the width of the male pins on one of my jamma connectors, they are 2mm width. So I think even 2.8 will be to wide, also because the space between the pins is pretty narrow.
I don't think these pins are meant to be connected through female connecotrs, IMO the wires should be soldered. Why don't you want to do that?
