Notes: 0.900.0538.7 SELF-LOCKING NUT UNI 7474 is original SAME-DEUTZ-FAHR product. 0.900.0538.7 SELF-LOCKING NUT UNI 74741 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849