The utility model relates to a transmission line fortune dimension specialized tool technical field is a special tool for electrified fastening screw bolt, including ratchet spanner, front -arranged plate, rearmounted board, C shaped plate, go up adapting unit, adapting unit and spring down, ratchet spanner is including activity trigger piece, first sleeve and second sleeve, installs first sleeve in activity trigger piece's left part front side, installs the second sleeve at activity trigger piece's left part rear side, is equipped with traction hole at activity trigger piece's right -hand member, be equipped with the front -arranged plate who is located movable trigger piece the place ahead outside first sleeve. The utility model discloses can realize electrified fastening bolt's operation, labour saving and time saving, and can inject the fastening moment of torsion to the bolt through ratchet spanner's setting, and make its fastening operation keep in reasonable torque range, improve assembly operations's accuracy, prolong its life, and can confirm that whether the fastening is accomplished, further improves electrified fastening bolt's operating efficiency through ratchet spanner's sound feedback.