Volvo Penta hub hex screw used on older style, square blade type, 2 blade hub kits fitted to a Saildrive.
These screws should be removed after each season, cleaned and reinstalled using a small amount of locking fluid, part number 1161053.
Volvo Penta Part No: 3855529 - 2 required.
For: Older square-style blades, 2-bladed folding hubs mounted on a Saildrive.