My boat is built in Finland
. Some great workmanship, but they do things a bit different than in North America:
I'm working on replacing the hose between my stern-tube and stuffing box, but have run into an odd nut on the forward end of the prop-shaft. It's inside the shaft coupling.
I have been searching the internet
for a socket to fit this nut, but the best I have found is some pictures of homemade sockets for similar nuts.
I once had a similar nut on a Vetus flexible coupling, but the tool was a wrench that would not fit this application (inside the coupling).
They called it a slotted lock nut (DIN 1804).
Anybody know another name of this type of nut ?
Is it a standard ? Or custom ?
Where can I get a socket ?
Please see attached picture and sketch.