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When forces pull apart a bolt, this is called tensile stress (same equation as stress initially mentioned at the start of the LSET). Because of Newton’s Third Law, every action has an equal and opposite reaction, preload from a bolt that clamps down on a surface will also pull the bolt apart creating tensile stress. This is why a bolt cannot be tightened too much, as the bolt can fail if tensile stress becomes greater than its ultimate strength. |
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Bolt Spacing
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