To prevent contact deformation, an electrical shocks and a short circuits using a contact, miniaturization of a housing, and improvement in an insertion-and-extraction performance.

In a receptacle 32, which makes contact a contact part 67 of a contact 56 in a contact part 43 of a contact 35 in elasticity by a plug-in with a plug 33, the contact part 43 of the contact 35 is formed projecting outside a contact side surface 50 which is parallel to the direction A of a connector insertion and extraction of a housing 34. For this reason, the contact part 67 of the contact 56 of the plug 33 can be formed inside a contact side surface 70 which is parallel to the direction of a connector insertion and extraction of a plug-in projecting part 60 of a housing 55, the deformation of the contact 56, and the electrical shock by the contact 56 can be prevented. Moreover, miniaturization is aimed by making La small, by turning up an insertion-and- extraction side tip part 46 of the contact 35 to a base end side, and a prying at the time of the insertion and extraction is prevented, by forming a projected part and a dent part for a position indexing in the plug-in projecting part 60 and a plug-in recess part 41.