Complete New Fridge Gas Burner with silver jet on left.
Note the flimsy gas jet on the left. The gas jet is placed inside the brass coloured receptacle, and when fitted, can be seen in position through the side wall hole. I suggest a minute bit of Plumbers putty, on the shoulder, to hold it in place while screwing in the gas pipe nut. The brass spring was used to retain the jet while in transit. Also use plumbers putty on the lock nut thread, this makes it easier to screw up and ensures a good gas seal. The gas jet was marked 46, on the one removed!