This self-locking nut secures fasteners in the inclined feeder assembly of agricultural tractors and combines. It uses a built-in locking feature to resist loosening from vibration during operation. The nut maintains clamp force on bolted joints in the feeder housing, which transfers crop material from the header into the threshing mechanism. A loose nut in this location can allow component shift, leading to misalignment of the feed chain or auger. As an original AGCO part, the nut matches the thread fit and locking torque specified for the feeder assembly, eliminating the need for thread-locking compounds. Replace any nut that shows signs of corrosion or stripped threads. Torque to the specification for the joint location on reinstallation.