Определение shear pin в Английский Язык Английский Язык словарь
A safety device, used to fasten a propeller to its shaft; it breaks when the propeller hits a solid object, thus preventing further damage
A protection device used on some couplings To protect driver and driven equipment against overload The pin is located between coupling halves and is machined to break or shear at a predetermined load allowing the driver side to free wheel