Join Date: Sep 2008
Location: Victoria B.C. Canada
Thanked 111 Times in 102 Posts
Rep Power: 10
I'd love to get a sense as to what purpose thru-bolts serve?
They prevent the thru hull from turning.
The nut on the mushroom is not a very solid attachment, although used by many manufacturers. Also a valve on a mushroom alone has mis-matched threads, straight on the mushroom and tapered on most valves.
Living aboard in Victoria Harbour