Aft keel bolt on a Catalina 36 1983

[Marinemedic1]

I’m working on a Catalina 36 built in 1983 and the aft keelboat does not have the proper washer has anybody ever worked on this I want to fix What type of the washer does it take or spacer

[Tsuru]

This would be a great question for the Catalina owners group @ catalina36.org
Our 36 is a later model but I suspect the keel bolts, washers, ect. are the same.
The keel bolts are all the same size 3/4” except the front that is slightly smaller. The washers are 1 &11/16” diameter and approximately 1/8” to 3/16” thick with a lock washer. The nut and washers are marked 316, referring to the stainless grade.
I’d consider going to Catalina for a replacement or possibly Catalina Direct.
Wonder why yours has been removed and best of luck with the repair.