Last time I got them was 2012: Replacement Turnbuckle Screw 3/8" pin for 1/4" wire. Navtec Part D320-S12, West Marine SKU: 166506 2 @ $37.73 ea, $79.99 w tax

But good news for you we switched and I think I have one in my tool box I'll contact you with photo and send it if it is the right one.