The McCormick 6642708A1 is a genuine OEM grease cap, also cross-referenced as a Case IH and New Holland part. This essential component features an M10x100 thread, designed to seal and protect grease fittings on agricultural machinery. It prevents contamination and ensures optimal lubrication for critical moving parts. This grease cap is compatible with a wide range of McCormick, Case IH, and New Holland tractor models, providing a precise fit and reliable performance.