A faucet fixation system , comprising: a fastener configured to couple to a faucet and extend through a support structure of the faucet ; and a connector comprising: a base having a longitudinal bore receiving the fastener and a radial bore extending transversely through the longitudinal bore ; and a nut assembly disposed in the radial bore and around the fastener , wherein the nut assembly includes a first locking member , which has a first threaded portion and a first actuating portion disposed on opposite sides of the fastener , and a second locking member , which has a second threaded portion and a second actuating portion disposed on opposite sides of the fastener ; wherein in a locking position of the connector , the first and second threaded portions engage threads of the fastener to prohibit relative sliding movement between the connector and the fastener in a longitudinal direction while allowing the connector to rotate along the threads of the fastener ; wherein in a non-locking position of the connector , the first and second threaded portions disengage the threads of the fastener to allow movement of the connector relative to the fastener in the longitudinal direction; and wherein in moving from the non-locking position to the locking position, each threaded portion moves toward the fastener and each actuating portion moves away from the fastener . a fastener configured to couple to a faucet and extend through a support structure of the faucet ; and a connector comprising: a base having a longitudinal bore receiving the fastener and a radial bore extending transversely through the longitudinal bore ; and a nut assembly disposed in the radial bore and around the fastener , wherein the nut assembly includes a first locking member , which has a first threaded portion and a first actuating portion disposed on opposite sides of the fastener , and a second locking member , which has a second threaded portion and a second actuating portion disposed on opposite sides of the fastener ; a base having a longitudinal bore receiving the fastener and a radial bore extending transversely through the longitudinal bore ; and a nut assembly disposed in the radial bore and around the fastener , wherein the nut assembly includes a first locking member , which has a first threaded portion and a first actuating portion disposed on opposite sides of the fastener , and a second locking member , which has a second threaded portion and a second actuating portion disposed on opposite sides of the fastener ; wherein in a locking position of the connector , the first and second threaded portions engage threads of the fastener to prohibit relative sliding movement between the connector and the fastener in a longitudinal direction while allowing the connector to rotate along the threads of the fastener ; wherein in a non-locking position of the connector , the first and second threaded portions disengage the threads of the fastener to allow movement of the connector relative to the fastener in the longitudinal direction; and wherein in moving from the non-locking position to the locking position, each threaded portion moves toward the fastener and each actuating portion moves away from the fastener . <EOS>