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Re: Tensile strength of bolts in re: Torque

To: ccrobins@ktc.com, DLancer7676@cs.com
Subject: Re: Tensile strength of bolts in re: Torque
Date: Mon, 16 Oct 2000 22:23:51 EDT
Cc: tob.sprite.landcruiser@home.com, boxweed@thebest.net, spridgets@autox.team.net
In a message dated 10/16/2000 6:45:43 PM Eastern Daylight Time, 
ccrobins@ktc.com writes:

<< With the above in mind, I suspect that, in the seminar that DLancer
 attended, the example he described was one of explaining what happens if
 you torque a bolt to it's strain force value and cause it to enter its
 plastic condition.  >>

Not true Charley. The bolts were torqued to the specific torque recommended 
for that bolt.  We observed the torque being set and the pre-load being 
measured.  Then the bolt was removed and the whole operation undertaken again 
with guages and torque wrench.  Same torque, reduced pre-load  the 2nd time, 
and even more so the 3rd time.  And these were quality bolts with the threads 
rolled in and not cut in (that is another fascinating area of discussion 
about bolts).

--David C.

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