An eccentric threaded fastener includes a bolt; and a fastening mechanism. The bolt includes a head and a threaded shank, the head including a plurality of positioning protrusions formed on a bottom. The fastening mechanism includes two opposite nuts disposed symmetrically along the threaded shank, the nut including a threaded hole for fitting around and securing to the threaded shank, and a frictional surface spirally extending out of one end of the threaded hole, the frictional surface and the threaded hole being co-axial. One end of threads of the threaded hole come into contact with an inner edge of the frictional surface. The frictional surface of one nut come into contact with that of the other nut to form the fastening mechanism with a gap formed between the nuts. A positioning pin is inserted into the gap to lock the nuts.

Provided is an apparatus for limiting rotation of a steering wheel, and more particularly, an apparatus for limiting rotation of a steering wheel, whereby a rotation angle of the steering wheel can be limited to a predetermined angle. The apparatus for limiting rotation of the steering wheel, installed in a steering system, includes: an end-stopper disposed inside a housing through which a steering shaft on which the steering wheel is installed, passes, and the end-stopper limiting a rotation angle of the steering wheel to a predetermined angle.

A blind nut assembly including a bush and nut. The bush includes a short cylindrical collar, which has a polygonal outer surface on the outer surface thereof, and a flange, the outer surface of which is polygonal. The nut consists of a female screw member, on which a female screw to be mated with a male screw on a bolt is formed; and a nut cylindrical member, which is formed adjacent to the female screw member, which has a polygonal inner surface on the inner surface thereof aligning with the polygonal outer surface of the collar, of which the outer surface is also a polygonal outer surface, and which has a wall thickness that is thinner than the female screw member. The nut head has an outer diameter which is larger than the maximum outer diameter of the nut cylindrical member, is formed above the nut cylindrical member.

Provided is an apparatus for limiting rotation of a steering wheel, and more particularly, an apparatus for limiting rotation of a steering wheel, whereby a rotation angle of the steering wheel can be limited to a predetermined angle. The apparatus for limiting rotation of the steering wheel, installed in a steering system, includes: an end-stopper disposed inside a housing through which a steering shaft on which the steering wheel is installed, passes, and the end-stopper limiting a rotation angle of the steering wheel to a predetermined angle.

A blind nut assembly including a bush and nut. The bush includes a short cylindrical collar, which has a polygonal outer surface on the outer surface thereof, and a flange, the outer surface of which is polygonal. The nut consists of a female screw member, on which a female screw to be mated with a male screw on a bolt is formed; and a nut cylindrical member, which is formed adjacent to the female screw member, which has a polygonal inner surface on the inner surface thereof aligning with the polygonal outer surface of the collar, of which the outer surface is also a polygonal outer surface, and which has a wall thickness that is thinner than the female screw member. The nut head has an outer diameter which is larger than the maximum outer diameter of the nut cylindrical member, is formed above the nut cylindrical member.