A connector to which an object is to be connected, includes an insulator having at least one contact support groove, and at least one contact which is fixed to the insulator by being inserted into the contact support groove, the contact being contactable with the object after the object is inserted into the insulator. The insulator includes at least one holding portion formed as one of a recess and a through-hole, which is communicatively connected with the contact support groove, and the contact includes a locking protrusion, which comes into engagement with the holding portion to hold the contact to the insulator when the contact is inserted into the contact support groove.