Notes: 3225550 HEX HEAD FLANGE SCREW M12X1.75X29 12.9 C is original CATERPILLAR product. 3225550 HEX HEAD FLANGE SCREW M12X1.75X29 12.9 C1 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849