Abstract: A socket connector includes: a socket housing; a plurality of contacts arranged in the housing; and a protective metal fitting configured to protect an island-like end part. The protective metal fitting includes: an upper-surface protective part covering an upper surface of the island-like end part; two crosswise surface protective parts extending downward from both ends of the upper-surface protective part in a width direction, and opposed to two crosswise side surfaces, respectively, of the island-like end part that face in the width direction; and two curling parts extending from lower ends of the two crosswise surface protective parts, respectively, in such a manner that the two curling parts get closer to each other as they extend.

Abstract: An island-like part includes an island-like main part, and two island-like end parts adjacent to the island-like main part in a pitch direction of a plurality of socket contacts. Each of the island-like end parts has an upper surface, an outward lengthwise side surface facing outward in the pitch direction, and two crosswise side surfaces facing in the width direction. Each of the protective metal fittings includes an upper-surface protective part covering an upper surface, an outward protective part extending downward from the upper-surface protective part and covering the outward lengthwise side surface, and two lateral protective parts extending downward from the upper-surface protective part and covering the two crosswise side surfaces, respectively. The outward protective part and the two lateral protective parts are directly connected to each other without the upper-surface protective part being interposed therebetween.

Abstract: A first receptacle pitch inner surface and a first plug pitch outer surface opposite each other are both flat surfaces, and they are configured to come into surface contact with each other in the mated state. A distance in the pitch direction between a second receptacle pitch inner surface and a second plug pitch outer surface opposite each other in the mated state is larger than a distance in the pitch direction between the first receptacle pitch inner surface and the first plug pitch outer surface opposite each other in the mated state. A distance in the pitch direction between the first receptacle pitch inner surfaces of two receptacle pitch inner surfaces is longer than a distance in the pitch direction between the first plug pitch outer surfaces of two plug pitch outer surfaces.

Abstract: A first receptacle pitch inner surface and a first plug pitch outer surface opposite each other are both flat surfaces, and they are configured to come into surface contact with each other in the mated state. A distance in the pitch direction between a second receptacle pitch inner surface and a second plug pitch outer surface opposite each other in the mated state is larger than a distance in the pitch direction between the first receptacle pitch inner surface and the first plug pitch outer surface opposite each other in the mated state. A distance in the pitch direction between the first receptacle pitch inner surfaces of two receptacle pitch inner surfaces is longer than a distance in the pitch direction between the first plug pitch outer surfaces of two plug pitch outer surfaces.

Abstract: A plug connector includes first contacts, a first housing comprising a guide portion and holding the first contacts, and a first metal member. The first metal member is attached to the guide portion and covers at least parts respectively of an upper surface of the guide portion and three outer surfaces of an end wall portion of the guide portion. A receptacle connector includes second contacts, a second housing holding the second contacts, and a second metal member. The second housing comprises a to-be-guided portion outside an arrangement range of the second contacts. The to-be-guided portion is adapted to be fitted to the guide portion and is formed by a U-shaped wall. The second metal member is attached to the to-be-guided portion and covers at least parts respectively of an upper surface of the to-be-guided portion and two inner surfaces of the U-shaped wall.

Abstract: A plug connector includes first contacts, a first housing comprising a guide portion and holding the first contacts, and a first metal member. The first metal member is attached to the guide portion and covers at least parts respectively of an upper surface of the guide portion and three outer surfaces of an end wall portion of the guide portion. A receptacle connector includes second contacts, a second housing holding the second contacts, and a second metal member. The second housing comprises a to-be-guided portion outside an arrangement range of the second contacts. The to-be-guided portion is adapted to be fitted to the guide portion and is formed by a U-shaped wall. The second metal member is attached to the to-be-guided portion and covers at least parts respectively of an upper surface of the to-be-guided portion and two inner surfaces of the U-shaped wall.