Abstract: A female terminal includes a terminal body having a contact holder in a tubular shape at a front side of the terminal body, a contact member in a tubular shape which is contained inside the contact holder and into which a male terminal is inserted from a front side, and a rotary ring which is mounted to the contact holder. The contact member has a pair of holding rings provided at both ends thereof, and a diameter variable part held by a pair of the holding rings at both ends thereof, an inner diameter of the diameter variable part being set to be larger than an outer diameter of the male terminal in an initial state, and contracted to be smaller than the outer diameter of the male terminal, by twisting a pair of the holding rings.

Abstract: A female terminal fitting includes terminal holding plates stacked on one another are configured of a basic terminal holding plate formed integrally with one end of an electric wire connecting portion and auxiliary terminal holding plates which are formed on corresponding edges of the basic terminal holding plate via corresponding bending margins and which are folded up and then down on to the basic terminal holding plate so that the auxiliary terminal holding plates are in a stacked state on the basic terminal holding plate. A fixing piece is formed integrally on an auxiliary terminal holding plate which is stacked at an uppermost level at an edge portion on a side which lies opposite to a side where the bending margin is provided, so as to be brought into engagement with a locking portion on the basic terminal holding plate to fix the stacked state.