This specification covers the requirements for joints, universal, plain, light and heavy duty, for use in intermittent operations (see 6.1).Intended Use: The universal joints covered by this specification are used for intermittent mechanical linkages i.e. gun controls, steering, and flap/slat actuation on aerospace equipment. The universal joints described in this specification are military unique because they must be able to operate satisfactorily when subjected to torsional and axial overload capacity, and low torsional deflection. Commercial universal joints are not designed to withstand these extreme conditions or sudden mechanical changes, and would experience catastrophic failure.

This specification covers the requirements for joints, universal, plain, light and heavy duty, for use in intermittent operations (see 6.1).Intended Use: The universal joints covered by this specification are used for intermittent mechanical linkages i.e. gun controls, steering, and flap/slat actuation on aerospace equipment. The universal joints described in this specification are military unique because they must be able to operate satisfactorily when subjected to torsional and axial overload capacity, and low torsional deflection. Commercial universal joints are not designed to withstand these extreme conditions or sudden mechanical changes, and would experience catastrophic failure.