> I think for most of our automotive applications, Grade 5 is completely
> adequate
>
Agreed - however this past Saturday night I found the old short rocker
stand studs slightly bent when I went to install a new rocker assy in the
1275. I didn't have the right stud (it is 5/16 coarse on one end and fine
on the other, with a long shoulder in between). I found a long coarse bolt
(grade 5, so I thought) and I cut the head off. Then I used a fine thread
die to make an exact copy of the rocker stud. Tightened it down (something
like 30 ft-lbs spec). Tightened it some more. And some more. The stud
completely stretched. It was awesome to see (a picture of the bolt will go
on the yet-to-be created web page when I document the rebuild). I don't
think the bolt was hardened at all - it was way too easy to use the die.
Maybe it was a Home Defect special.
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