Notice:
The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.
Not exactly sure the piece you are referring to but the manual section of this Forum has a parts catalog. Below is the picture they have of the boom assembly. Not sure when you state "screws into a pivot" what that would refers to but I believe it may be piece 9, the gooseneck casting/assembly, since the main sail connects to it by using a clevis pin thru the casting tab. Perhaps if you can zoom in on the photo, you can pinpoint the piece number. Also, Catalina Direct sells boom assemblies. I would check out below link to Catalina Direct's standing rigging hardware to see if anything matches what you are looking for: http://www.catalinadirect.com/index.cfm/category/149/spar-fittings.cfm
Buzz seems to have posted what you need but I replaced mine with a thicker/wider piece of SS. It seems the original tangs are prone to breaking. You have to remove the end cap to get to the bolt nut. Those screws holding the end cap to the boom can be hard to extract.
Scott-"IMPULSE"87'C25/SR/WK/Din.#5688 Sailing out of Glen Cove,L.I Sound
You guys got it right. I now see my misunderstanding - I misinterpreted main sheet thinking what was meant was main sail. I was considering the wrong end of the boom !
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.