The utility model belongs to the technical field of connectors, and particularly relates to a
screw terminal connector which comprises a connector body, a wiring end and a nut insert, an
assembly cavity is arranged in the nut insert and communicated with a through hole, a clamping block with teeth is arranged in the hole in a sliding mode, a driving rod is in linkage with the clamping block, and when a screw is screwed in, the driving rod drives the clamping block to rotate. The driving rod pushes the clamping block, clamping block teeth to be embedded into the screw and multiple sets of equidistantly-distributed auxiliary fixing mechanisms to apply force in all directions according to cooperation of the inclined faces, the screw is effectively prevented from loosening, rotating or disengaging, the connection stability and reliability are greatly improved, stable current transmission can be guaranteed even under extreme working conditions such as strong vibration and frequent
impact, and the service life of the screw is prolonged. Compared with the prior art, the clamping block and the driving rod are reset through the tension spring, dismounting and re-mounting are convenient, the problems that a screw is prone to loosening, stress is uneven, and the fastening effect is poor are solved, and a
solid guarantee is provided for reliable operation of
electronic equipment.