M2/BN109 is a hex nut manufactured by Bossard. It is a metric coarse threaded part with a hexagonal shape and is made of grade A2 stainless steel, which is corrosion resistant and has high mechanical strength. The nut is class 8.8 strength, has an outside diameter of 22mm and has a thread pitch of 2.5mm. The hex nut is commonly used in electrical and mechanical applications, such as fastening wood, metal and plastic components.