An electrical connector (100) includes an insulating housing (5) with a plurality of contacts received therein, a load plate (1) covering on the insulating housing (5) and a screwing member (2) assembled to the load plate (1). The screwing member (2) includes a head portion (20) with a plurality of tooth portions (201), the load plate (1) includes a tongue portion (12) with a fixing hole (120) for the screwing member (2) going through, a recess (121) near the fixing hole (120) and a block (1210) in the recess (121), during the process of screwing the screwing member (2), the tooth portions (201) touch with the block (1210) for making a sound.