A4817R John Deere PTO Special Set Screw For 50, 60, 70, 80, 520, 620, 720, 820, 530, 630, 730, 830, 840

John Deere PTO Special Set Screw. The Threads Are Still Good. The Screw Slot Is Not Broken Out. It Is Part Number A4817R. For 50 Serial Number 5017822 And Up To the End, 60 Serial Number 6033676 And Up To The End, 70 Serial Number 7010776 And up To The End, 80, 520, 620, 720, 820, 530, 630, 730, 830, 840