This M10 bolt secures the deflector assembly on the chaff spreader of a self-propelled forage harvester. It is an original replacement part manufactured to a hardness class of 10.9, which provides the tensile strength required for the vibration and load present at that mounting point. A bolt that has stretched or shows thread damage will allow the deflector to shift, reducing spread pattern accuracy. When reinstalling, clean the threaded hole and tighten the bolt to the torque specification for a grade 10.9 fastener.