> I have one customer who keeps wanting to use the nice shiny SAE
> grade 8 bolts because they look better than those black A325 or
> A490 bolts.
To make things worse, the Counterfeit Bolt Affair of the 1990's
hasn't gone away. If anything it's gotten worse. <http://
www.nv.doe.gov/library/publications/sitelines/sl100.pdf> The original
problem was with so-called grade 8 bolts that were actually grade 8.2
(or something like it) that were understrength or wouldn't hold a pre-
load. So when you go through all your spec options keep in mind that
you could be getting ferro-manurium fasteners if you don't shop with
care.
Christopher Wright P.E. |"They couldn't hit an elephant at
chrisw@skypoint.com | this distance" (last words of Gen.
.......................................| John Sedgwick, Spotsylvania
1864)
http://www.skypoint.com/members/chrisw/
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