Spherical fittings are intended for use with steel tubing or hoses in hydraulic systems or pneumatic systems. Carbon steel sleeves may be used only with fully annealed 70-30 copper-nickel or carbon steel tubing. Corrosion-resisting steel sleeves may be used with fully annealed 70-30 copper-nickel, 70-30 nickel-copper, corrosion-resisting steel or carbon steel tubing. These fittings are not intended for use in aircraft. These fittings are military unique because they are intended to mate and integrate new design possibilities with existing military designs. These fittings will allow retrofitting of new hydraulic and pneumatic controls, without redesign, to existing military systems.