Abstract: A contact is provided with an engaging portion for engaging with a housing. The housing is provided with an insertion end portion for insertion of the contact, a connection end portion for connection to a partner connection target, a contact insertion hole, and an engagement arm extending in a cantilevered manner from the connection end portion toward the insertion end portion. The engagement arm includes an engaged portion for engaging with the engaging portion, and an extension arm portion extending from the engaged portion toward the insertion end portion. The extension arm portion faces an inner wall defining the contact insertion hole with a space therebetween, and restricts the flexing amount of the engagement arm by the tip side of the extension arm portion abutting against the inner wall when the engagement arm flexes.