Notes: 0.900.0744.4 DRILLED SCREW M12X1.75X30.5 is original SAME-DEUTZ-FAHR product. 0.900.0744.4 DRILLED SCREW M12X1.75X30.51 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849