3060474 Pin Bucket to dipper arm Fits HITACHI EX300-2, EX300-3, EX300-5One New Aftermarket Replacement Bucket to Dipper Arm Pin for Hitachi EX300 Excavators This bucket to dipper arm pin is the primary pivot pin connecting the excavator bucket to the dipper arm (stick) on Hitachi EX300 series crawler excavators. One pin is required per machine. It is a critical structural component that bears extreme loads during digging and lifting cycles, and should be replaced alongside corresponding bushings and seals for best