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Re: 1/2" or 5/8" SS machine bolts

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>They also tell me that the minimum tensile strength of the 18-8 SS is 80 
>ksi.  If I use AISC's 0.17Fu "for threaded parts of materials not listed", 
>will I be OK?
The minimum tensile strength of 30 stainless is about 70 ksi and the 
yield is about 30 ksi. Ordinary stainless doesn't pre-load very well 
because it's pretty soft and it also galls against itself, unless you use 
a coating of some sort. There are a dozen different coating sold under 
various trade names which sound very much alike--you'll probably need to 
check around for the proper one. I wouldn't use stainless from a hardware 
store for any structural purpose. Buy using an ASTM spec. 

Christopher Wright P.E.    |"They couldn't hit an elephant at
chrisw(--nospam--at)        | this distance"   (last words of Gen.
___________________________| John Sedgwick, Spotsylvania 1864)

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