Connector and connector assembly

A connector having a front end in a predetermined direction and being selectively connectable with a first connecting object and a second connecting object along the predetermined direction, wherein:

• the first connecting object comprises a first fitting portion having a mating contact, and further comprises a female screw portion and a female screw seat;
• the second connecting object comprises a second fitting portion having a structure corresponding to the first fitting portion;
• the connector comprises a connector main, a male screw member and a screw holding member;
• the connector main is selectively mateable with the first fitting portion and the second fitting portion in the predetermined direction;
• the connector main has a contact which is brought into contact with the mating contact when the connector and the first connecting object are connected with each other;
• the screw holding member holds the male screw member;
• the screw holding member has a male screw seat which is brought into contact with the female screw seat when the male screw member is connected with the female screw portion;
• the screw holding member is attached to the connector main;
• and
• the screw holding member is relatively movable with respect to the connector main in the predetermined direction in a state in which the screw holding member is attached to the connector main.