In August 2015 Japan sent the uncrewed cargo spacecraft “Kounotori” (“Tork” English) to the space to supply the International Space Station. “Kounotori” carries Brazil’s small satellite, and the small screws installed on the satellite are supplied by Matsumoto Industry Co Ltd. The small screws are M3 with countersunk head and anti-loosening special threads called “Noji Lock” which prevent loosening with no coating required, and therefore the screws were adopted. Matsumoto Industry specializes in micro-screws. Besides the medical industry, the company is tapping into the space machinery industry.
via Japanese Matsumoto Industry to supply small screws for Brazil’s small satellite.