The Cat 438021480 is a genuine Caterpillar hex head bolt, manufactured from Grade 8 steel for high strength and durability. It features a 9.525mm nominal diameter with a 1.5875mm coarse thread pitch, a total length of 38.1mm, and a black phosphate coating for enhanced corrosion resistance. This OEM bolt ensures reliable fastening in various Caterpillar machinery applications, including articulated trucks, asphalt pavers, cold planers, excavators, and wheel loaders.