The Case-IH 238633R1 is a genuine OEM washer designed for critical applications in a wide range of Case-IH agricultural and industrial equipment. With an outer diameter of 20.6 mm, an inner diameter of 13.1 mm, and a thickness of 1.6 mm, this washer ensures proper load distribution and prevents loosening of fasteners. It is a vital component for maintaining the integrity and performance of tractors, combines, cotton pickers, forage harvesters, and more.