Mercury Marine
https://www.crowleymarine.com/mercury/products/f1931-stop-nut-1-2-20-stainless-steel
STOP NUT, 1/2 - 20, STAINLESS STEEL F1931
https://www.crowleymarine.com/mercury/products/f1931-stop-nut-1-2-20-stainless-steel
Price not available
No longer available
Product Description
Mercury factory part.