On or around Thu, 24 Jun 2004 08:46:11 +0100, "Simon Coupland"
<firstname.lastname@example.org> enlightened us thusly:
>I have just swapped the bolts on my Safety Devices role cage for stainless
>(the old ones were rusty).
>I then got thinking whether they are strong enough.
>The original bolts are 8.8 grade and the stainless ones are A2-70.
>Anyone know if this is OK, or should I go back to 8.8 grade..?
we did this a while back. If you can get A2-80 then they're nearer
8.8-spec. I doubt, however, that the strength of the bolt is that critical,
A2-70 are pretty close to 8.8 - the toughest bolts I've seen were marked
12.9, but I couldn't find any to replace 'em, and 8.8s in the same
application never failed.
Check with SD as was suggested, if you're not sure.
Interesting to note that the specification for seat belt bolts (7/16"UNF) is
designed to be OK even with mild steel bolts, which seems a sensible way to
go - you can never know that someone will replace a bolt with the same spec.
Austin Shackles. www.ddol-las.fsnet.co.uk
my opinions are just that
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