This document discusses cotter and knuckle joints. It provides diagrams of a cut section of a socket and spigot joint, showing how the cylindrical spigot fits inside the socket. It also contains diagrams of a knuckle joint, which allows rotation between two connecting components about an axis perpendicular to their common plane. The document was authored by Hareesha N G of the Department of Aeronautical Engineering at Dayananda Sagar College of Engineering in Bangalore, India.

1. Cotter and Knuckle Joints
Hareesha N G
Dept. of Aeronautical Engg
Dayananda Sagar College of Engineering
Bangalore-78
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2. • Cut section of socket and Spigot joint
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5. • Knuckle Joint
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