Volvo Penta fixed propeller tab washer used on some 2 and 3 blade fixed propeller cones using a tab washer to secure the bolt.
This is the lock tab washer where the tabs are bent to secure.
Remember, propellers should be removed at the end of each season, disassembled, cleaned and regreased using 828250. A new tab washer should be considered when reassembling. The grease required is part number 828250.
Part number 23680979