Axle retainer tab

Help, I'm putting my axles back in my 8 3/4 rear after being apart for a couple years and after setting the back lash on the adjuster nut I just realized I've misplaced the little retainer that secures the adjuster ring, I know it's a small part maybe I could just buy one new if there still sold ? Otherwise anyone have a spare they want to sell? I'm in Canada so freight is difficult now from US suppliers but it's small enough to put in the post or someone has a part number for a new one I could source from Napa or? Thanks