This is a genuine BMW threaded bolt, part number 32 31 1 159 755. The number stamped on the part is 32311159755; BMW's catalog files it under the short number 1159755. You will find it on our Steering shelf, under Other Steering parts.
It fits the E36 sedan, coupe, convertible and touring (318i, 320i, 323i, 325i and 328i, 1992–1999), with the M40, M42, M43, M44, M50 or M52 engines — and the European-market versions.
BMW draws it on the Vertically Adjustable Steering Column (32_0718) diagram. It weighs about 14 g (under 0.1 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.