Saving Old Seagulls

thanks tam but what size and thread are the transom bolts do you know

if you have them left I could take a couple of the cork seals

tam billy here do you have any transom clamp bolts and what size and thread are they got told they were 5/16 so I ordered some but they are the wrong thread I want to get some stainless ones for my outboard

what size and thread are the century transom clamp bolts please