Notes: ER107916 HEXAGON NUT UNI 5589 M20X1.5 LH 6S is original JOHN-DEERE product. ER107916 HEXAGON NUT UNI 5589 M20X1.5 LH 6S1 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849