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Given the complexities and variances involved with even properly interpreting a torque settings chart, it's not surprising that achieving proper design tension using torque measurements is like shooting at a moving target. This is why reliance on torque values alone should no longer...

This chart will assist you in recommending a particular Impactool for a specific application. The figures used are based on 70% of the tension proof load of a given size and grade bolt. For example, a Grade 5 bolt has a proof load of 94,200 psi (649,509 kPa). A 1/ 2"-13 UNC Grade 5 bolt has...

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