Hi John,
Screw or Knob for hood door at MF 180. The last Agco number I have is 521446M1. Called Nick's Farm Store in Geneva, Nebraska and they said that number has been updated to 529672M1. They didn't have any and the number is out of production. But some Agco Dealers still have some in stock. The Agco Dealer in Hull, Iowa should have 4 in stock. Call 1-712-439-2641. Hope that helps. Jerry