The Case IH 4155642 is a genuine OEM nut designed for reliable and secure fastening in a wide range of Case IH agricultural and construction equipment. This high-quality nut features an inner diameter of 12 mm, a 1.75 mm pitch, a height of 10 mm, and requires a 19 mm wrench for installation. It is a direct replacement for part number 4155642R and ensures proper fit and performance in compatible Case IH tractors, combines, and other machinery models.