A3581R John Deere Spring Pin For A, B, G, MC, R, 40, 50, 60, 70, 80, 320, 420, 520, 620, 720 John Deere Spring Pin. It Is Not Cracked, Bent Or Broken. It Is Part Number A3581R. For A, AR, AO, B, G, MC, R, 40, 50, 60, 70, 80, 320, 420, 520, 620, 720, 820, 330, 430, 435, 530, 630, 730, 830.