Abstract: A quick action coupling is provided of male and female coupling parts in which spherical camming members are loosely retained in a multiplicity of circumferentially disposed openings extended radially through the wall portion of the female coupling member. An axially movable collar surrounding the cylindrical wall portion of the female coupling member has an internally disposed camming surface portion which is configured to cam the spherical members radially inwardly upon movement of the collar in the direction of the open end of the coupling member. The male coupling member is provided with an annular end portion interfacing with a compressible sealing ring in the female coupling portion and further has an upwardly open groove disposed in alignment with the spherical members when the end surface portion is in interfacing relationship with the sealing ring.