In an engaging member 1 which holds a contact member 8 made of metal and having two contact surfaces 9 which form a recess 6 for receiving a shaft member 5 so as to be slidably displaceable on the shaft member 5 in accordance with displacement in a direction of the axis of the shaft member 5, a holding groove 12 is formed for exposing at least either end of a back side of the contact surface 9 of the contact member 8 in a direction of the axis of the shaft member 5, and not for exposing a central section of a back side of the contact surface 9 of the contact member 8 in the axial direction. As a result, it becomes possible to hold the contact member 8 in the manufacturing process, so that the contact surface 9 is accurately positioned.