I KNEW someone would catch that. I guesstimated the side of the cross-hole in an effort to get the general idea across so someone who knew about such bolts would pipe up. I don't possess the tools to do this as well as it should do, and I don't want to modify the existing bolt as it is a carriage head bolt and the hole it goes into is round. I'm looking for the general name of this type of bolt so I can see about sourcing a hex-head bolt for the job. On Tue, 2011-05-24 at 21:33 -0400, David Beierl wrote: > At 08:49 PM 5/24/2011, Alistair Bell wrote: > >cut the bolt and drill a new hole... > > Better do it carefully. Counting the depth of the thread you've got > less than 1/32" of meat on either side of a 3/16" hole in a 5/16-18 > bolt. .025 inches actually, assuming National Form threads (good > assumption, I think). > > Suggest you a) grind a flat on the side of the bolt and b) use a > smaller hole or better yet c) a larger bolt. If you have to stick > with 5/16, going to fine thread (24 tpi) will gain you nine thou on > each side of the hole, for a total of .035 or the thickness of nine > Post-It notes on each side instead of six-plus. > > Yrs, > d |
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