1A8537 Bolt High Head Fits Caterpillar ModelsOne New Aftermarket Replacement High Head Bolt for Caterpillar (Cat) Motor Graders and Construction Equipment This high head hex capscrew is a heavy duty fastener used across a wide range of Caterpillar (Cat) construction equipment applications. The high dome hex head profile provides added strength, extended wear life, and reusability in demanding service conditions. The phosphate and oil coating provides corrosion resistance suitable for heavy