Notes: 21542 SLOTTED SET SCREW UNI 5923 M12X40 33H is original CARRARO product. 21542 SLOTTED SET SCREW UNI 5923 M12X40 33H5 is commonly used in transmissions/axles/engines 143801, 146685, 147792, 148249, 149967, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849