The Case IH 131377 is a genuine OEM M10x1.5 lock nut, designed for secure fastening in a wide range of Case IH and David Brown agricultural and construction equipment. This essential component ensures reliable performance and proper fitment, maintaining the integrity of critical assemblies. With a weight of 0.007 kg, a height of 8 mm, and a width across flats of 17 mm, it meets original manufacturer specifications for durability and precision.