The invention discloses a spinning assembly for production of industrial filaments used for nylon-66 air bags. The spinning assembly comprises a sand box and a spinning assembly shell, one end of thesand box is open, and a melt inlet is formed in the other end of the sand box. A filter screen, metal sand, a first metal fiber mat, a distributing plate, a second metal fiber mat, an L-shaped first seal ring and a spinneret plate are sequentially arranged in the sand box from the melt inlet end, the second metal fiber mat is compressed to the distributing plate by the first seal ring, the spinneret plate is set into a stepped shape in the axis direction, the diameter of the end, adjacent to the second fiber mat, of the spinneret plate is small, the end, adjacent to the second fiber mat, of the spinneret plate is inserted into the sand box which is inserted into the spinning assembly shell, one end of the spinning assembly shell is open, an internal thread is machined on the inner wall ofthe opening end, an annular flange with an opening in the middle is arranged at the other end of the spinning assembly shell, and the inner side end surface of the annular flange makes contact with the edge of the spinneret plate in the sand box. By means of the assembly, the quality of the industrial filaments used for the nylon-66 air bags is obviously improved, and the cost is reduced.