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Just to be clear, torque specs are not arbitrary. If the engineers say the bolted joint needs 140 ft*lb, there is a reason for it. Using less torque than a bolted joint is designed for can lead to loosening, fatigue, and failure. Be sure to apply the correct torque with the specified lubricant (or lack of lubricant), otherwise you will under/over torque and have potential issues as well.
Source: I design products containing bolted joints for a living.
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