This pin secures components on the pick-up drum of a self-propelled forage harvester. It acts as a locating and retaining element, preventing relative movement between the drum and the parts it joins. A worn or missing pin allows play in the drum assembly, which can lead to misalignment of the tines or auger and cause uneven crop flow into the feed rolls. The pin is an original manufacturer part, machined to the same diameter and length as the original so it seats correctly in the bore without the need for shimming. On installation, ensure the pin is fully seated and that any retaining clip or fastener is secured.