Okay, here is a question that will really show my ignorance. I need a bolt for my centerboard pivot. The board is white oak and the logs on the case are B. Mahog. The plans call for a 3/8" bolt, but doesn't specify the material or the type of head, etc. Also, should there be any kind of bushing through the holes or should the bolt bear directly on the wood? There isn't much edge distance on either part. How should I seat the bolt so it doesn't leak? Any advice would be appreciated. In fact, if somebody wants to go to the defender or Jamestown distributors web sites and show me exactly what to get, THAT would be appreciated.
The boat is a 15' plywood Whilly boat.