PURPOSE: To inexpensively manufacture a product in light weight with no fatigue of a metal easily generated by providing large and small protrusion parts in a lead-in tool iron core plate, in which the surface of a cable hook part is formed in a cross shape relating to the surface of cable winding, to coat the lead-in tool with resin.

CONSTITUTION: A hook part 2 of a cross shape relating to an electric wire winding surface is formed in one end of an iron core plate 1 by which a cable lead-in tool is formed. The first lead-in hill 5 is formed in the other end of the iron core plate 1 to provide small and large protrusion parts 3, 4 in an intermediate part, and the second/third lead-in hills 6, 7 are formed to provide the fourth wind stop part 8 in the third lead-in hill 7. The hook part 2 is disposed in a line with a gravity part of a cable not shown in the drawing. The entire unit of the cable lead-in tool is coated with resin 9. In this way, a product of light weight in which plating of an iron part is omitted and fatigue of a metal hardly occurs is integrally fabricated in a single process to reduce the cost.