Notes: 196399A1 SELF-LOCKING SCREW M10X25 10.9 UNI EN 20 is original CASE product. 196399A1 SELF-LOCKING SCREW M10X25 10.9 UNI EN 201 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849