Are there alternatives when paRTS can't be found? on 1994 Nissan Altima

I have a 1994 nissan altima gxe, windshield wiper transmission rod, there is a piece on end of is stripped and am in need of replacerment. I ordered a rod but piece dont come with. can anyone help find one? I TRIED junk yards and still n o.

Asked by for the 1994 Nissan Altima