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Bolt yielding on the finished or supplied fastener often creates problems for the end user. Invariably bolts are the last item to be purchased during the last few weeks of a project's critical path. There is often insufficient time to repurchase. This leads to some surprising decisions:

1. Reduce bolt loads to avoid yielding. 2. Take bolts and use them, regardless of the situation, without tension control. 3. Select an extension-measuring system that will not detect fastener yielding.