Description:Spacers like part # 626-4390 are commonly used to provide additional stretch length in a fastener to lower preload loss or to lower the cyclic stress range of machine operating loads. They are used to establish and maintain the functional relationship of dependent parts in machine systems.Attributes:• Hardened steel• Inside Diameter: 130.25 mm (5.127 in)• Outside Diameter: 174 mm (6.850 in)• Thickness: 6.59 mm (0.259 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.