A manufacturing method for a plurality of outer joint members for a plurality of constant velocity universal joints which vary in joint type and joint size, each of the outer joint members comprising a cup section having track grooves, which engage with torque transmitting elements (19, 41), formed in an inner circumference thereof, and a shaft section that is formed on a bottom portion (12a2) of the cup section, wherein a shaft member (13a, 13a') forming the shaft section is welded to a cup member forming the cup section, the manufacturing method comprising, for each of the outer joint members: forming the cup member and the shaft member (13a, 13a') of medium carbon steel; performing, as manufacturing steps, a machining step and a heat treatment step on the cup member after integrally forming a tubular portion (12a1) and the bottom portion (12a2) of the cup member by forging, the machining step for the cup member comprising forming a joining hole in a thickness of the bottom portion (12a2) to prepare the cup member as a finished component; performing, as manufacturing steps, a machining step and a heat treatment step on the shaft member (13a, 13a'), the machining step for the shaft member (13a, 13a') comprising forming a joining outer surface on an end portion of the shaft member (13a, 13a') to be joined onto the bottom portion (12a2) of the cup member to prepare the shaft member (13a, 13a') as a finished component; fitting the joining hole of the cup member as the finished component and the joining outer surface of the shaft member (13a, 13a') as the finished component to each other; and welding a fitting portion between the joining hole and the joining outer surface through irradiation of a beam from an inner side of the cup member, characterized by the shaft member (13a, 13a') is one of a plurality of the shaft members (13a, 13a') prepared with respect to the cup member, the shaft members (13a, 13a') having a variety of specifications depending on a type of a vehicle in which the shaft members (13a, 13a') are to be assembled, and a diameter of the joining hole of the cup member of each of the outer joint members and a diameter of the joining outer surface of each of the shaft members (13a, 13a') of each of the outer joint members are set so that diameters of the fitting portions between the cup members and the corresponding shaft members (13a, 13a') are equal to each other among the outer joint members for the constant velocity universal joints having the same joint size, irrespectively of the joint type and the variety of specifications of the shaft members (13a, 13a'). forming the cup member and the shaft member (13a, 13a') of medium carbon steel; performing, as manufacturing steps, a machining step and a heat treatment step on the cup member after integrally forming a tubular portion (12a1) and the bottom portion (12a2) of the cup member by forging, the machining step for the cup member comprising forming a joining hole in a thickness of the bottom portion (12a2) to prepare the cup member as a finished component; performing, as manufacturing steps, a machining step and a heat treatment step on the shaft member (13a, 13a'), the machining step for the shaft member (13a, 13a') comprising forming a joining outer surface on an end portion of the shaft member (13a, 13a') to be joined onto the bottom portion (12a2) of the cup member to prepare the shaft member (13a, 13a') as a finished component; fitting the joining hole of the cup member as the finished component and the joining outer surface of the shaft member (13a, 13a') as the finished component to each other; and welding a fitting portion between the joining hole and the joining outer surface through irradiation of a beam from an inner side of the cup member, characterized by the shaft member (13a, 13a') is one of a plurality of the shaft members (13a, 13a') prepared with respect to the cup member, the shaft members (13a, 13a') having a variety of specifications depending on a type of a vehicle in which the shaft members (13a, 13a') are to be assembled, and a diameter of the joining hole of the cup member of each of the outer joint members and a diameter of the joining outer surface of each of the shaft members (13a, 13a') of each of the outer joint members are set so that diameters of the fitting portions between the cup members and the corresponding shaft members (13a, 13a') are equal to each other among the outer joint members for the constant velocity universal joints having the same joint size, irrespectively of the joint type and the variety of specifications of the shaft members (13a, 13a').