Which of the following is a type of piston pin?

• A. Fixed/Stationary
• B. Semi-floating
• C. Fully floating
• D. Piston skirt

Answer: (A)

Piston pins come in mounting styles that describe how the pin is held and whether it can move relative to the piston or the connecting rod. The fixed/stationary arrangement is a recognized type where the pin is secured in the piston so it does not rotate with the piston. This is a valid, distinct form of how the piston pin can be configured, which is why it’s selected as the correct option. The piston skirt, by contrast, is part of the piston itself rather than the pin. In other contexts you might hear about semi-floating or fully floating pins, which describe different degrees of allowed movement, but the option that clearly represents a piston pin type here is fixed/stationary.