pin slotBall lock pins and slot pins are machine parts that make it easy to connect parts, simply by inserting the specially desned pin part. Convenient because no tools are required. Various types are available, such as a simple pin type; a knobThe mathematical model for the pin-slot clearance joint is based on the revolute clearance joint [] and translational clearance joint [].The geometric properties of the pin-slot clearance joint are as shown in F. 1; length of