If you have a lathe and some old large junk grade 5 bolts it is nearly free, not to mention faster than ordering them.Maybe I'm missing something (likely) but why not use extra-thick Grade 8 flat washers?
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Makes perfect sense....If you have a lathe and some old large junk grade 5 bolts it is nearly free, not to mention faster than ordering them.
Just the way I am I suppose. And the reason I own 2 lathes.
Otherwise, you have an alternative.