A column unit for an electric power steering apparatus, comprising: a metal steering column that is cylindrical and that supports a steering shaft inside thereof such that the steering shaft can rotate; and a housing that is joined and fastened to the front end section of the steering column and houses at least part of the component parts of the electric power steering apparatus inside thereof, the housing being made by casting of a metal that is softer than the metal of the steering column by injection molding of synthetic resin, the steering column provided in the front end section with a bent section, which is formed by bending the front end section of the steering column outward in the radial direction, and a removed section where material has been removed and that passes through the steering column from the inner to outer circumferential surface thereof or between both side surfaces thereof is formed; characterized in that the housing formed by casting or injection molding with the bent section and the removed sections being embedded therein, the bent section is formed into a partial conical cylindrical shape that is inclined in a direction such that the diameter becomes larger going toward the front, and a large-diameter cylindrical section that is bent in the forward direction from the edge section on the large diameter side of the bent section is formed on the front end section of the steering column, the removed section comprises a plurality of through holes (90a, 90b) that are formed at a plurality of locations in the circumferential direction of the bent section and the large-diameter section, the rear end section of the housing exists on the inner-diameter side and outer-diameter side of the bent section and large-diameter section, and part of the metal or synthetic resin of the housing enters into the through holes. a metal steering column that is cylindrical and that supports a steering shaft inside thereof such that the steering shaft can rotate; and a housing that is joined and fastened to the front end section of the steering column and houses at least part of the component parts of the electric power steering apparatus inside thereof, the housing being made by casting of a metal that is softer than the metal of the steering column by injection molding of synthetic resin, the steering column provided in the front end section with a bent section, which is formed by bending the front end section of the steering column outward in the radial direction, and a removed section where material has been removed and that passes through the steering column from the inner to outer circumferential surface thereof or between both side surfaces thereof is formed; characterized in that the housing formed by casting or injection molding with the bent section and the removed sections being embedded therein, the bent section is formed into a partial conical cylindrical shape that is inclined in a direction such that the diameter becomes larger going toward the front, and a large-diameter cylindrical section that is bent in the forward direction from the edge section on the large diameter side of the bent section is formed on the front end section of the steering column, the removed section comprises a plurality of through holes (90a, 90b) that are formed at a plurality of locations in the circumferential direction of the bent section and the large-diameter section, the rear end section of the housing exists on the inner-diameter side and outer-diameter side of the bent section and large-diameter section, and part of the metal or synthetic resin of the housing enters into the through holes.