A rekbout is a bolt, used in the (using a torque wrench) confirmation of the corresponding nut or screw thread stretches very far. As a result, the rekbout subject to tension, which improves the quality of the confirmation. After disassembly shrinks a rekbout no more. The rack is out; of course they should therefore never meer dan één keer gebruikt worden! Cilinderkoppen en lagers van krukassen en drijfstangen worden vrijwel altijd vastgezet met rekbouten.