Hi Victor:
                        The untorqueing force will be higher. When the hardware is torqued, it starts from being loose and as it is  tighten it gets hot due to friction and the heat makes the molecules from both surfaces soft so it slides. Once the hardware is cold, the initial force to break the cold bond has to be higher. This is ignoring the oxidation between the adjacent materials due to time and moisture. Some torque tools work in either direction. Find one of them and set the tool to a torque in the midrange and tighten a bolt. Reverse the tool and try to release it and you will see that it takes more torque. Make sure that your hand is placed in the same area on the tool and the pull is perpendicular to the bar.
        Regards,
        Ramon

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor G. Hernandez
Sent: Thursday, May 05, 2005 5:25 PM
To: [log in to unmask]
Subject: [TN] Torque

Fellow TechNetters:

   Can someone share their experience with the topic of TORQUE.   How is
the torque valve of hardware differ from the
value of Un-torqueing that same hardware.   Is the torque valve higher
than the un torque value or vice versa.

   Power FETs can be damaged when the plastic package exhibits a hole where
the bolt is inserted.
Not the typical TO220 or TO66 plastic style.

Victor,

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