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Message: [QUOTE="TooManyToys, post: 1552659, member: 30841"] Late to the thread. cRaZy8, I have to commend you for doing that; not many do. That is the proper way to audit clamping load, measure the torque backing off. People can check clamping load by backing off, measuring the value, and then reapplying. It's done with critical applications, even with gaskets, as long as the temperature is ambient. Torque is only a measurement of rotational force, and friction is the biggest variable. All fasteners relax over time due to several factors. We use lubricants to even out the friction and reduce it, so it's easier to tension the fastener, but friction also keeps the fasteners from counter-rotating and backing off. Studs have three friction surfaces rather than two, so the potential is higher for loosening. So, yeah, the wrong lubricant will alter not only the tension on the fastener (high or low) but can alter the tendency for the nut or bolt to back off. In addition, every fastener of the same 14mm size can have different torque specs due to the thread pitch, surface finish, or lubricant used. [/QUOTE]

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