Torx-bolt with washer — a genuine BMW part, number 41 31 1 977 772. The number stamped on the part is 41311977772; BMW's catalog files it under the short number 1977772. You will find it on our Exterior Body shelf, under Other Bodywork parts.
It fits the E36 sedan, coupe, touring and compact (318i, 318ti, 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 Roof (41_0934) diagram. It weighs about 10 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.