Larry,

I saw on Yesterdays tractors that you are looking for a gang bolt nut. Try this:

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Shoup has them for 99 cents plus shipping.  You might also want this:

<!-- m --><a class="postlink" href="http://www.shoupparts.com/Catalog/View.cfm?type=Product&amp;ShoupID=SH45161">http://www.shoupparts.com/Catalog/View. ... ID=SH45161</a><!-- m -->

I don't see where they have the end spacer, but this might work better anyways:

<!-- m --><a class="postlink" href="http://www.shoupparts.com/Catalog/View.cfm?type=Product&amp;ShoupID=SH510321">http://www.shoupparts.com/Catalog/View. ... D=SH510321</a><!-- m -->

It doesn't show a picture of it on their web site, but it replaces the end spool by the nut and acts like a spring when it is tightened down, keeping the gang bolt tight. I've never tried one, but it looks pretty slick. If you have their spring catalog, it is on page 113.

Hope this helps.