As explained in our article published on July 23, 2015, entitled Slip-Critical Connections: Use of the Turn-of-Nut Method, this pretensioning method is based on the relative rotation between the nut and bolt head in order to develop the necessary preload tension force in the bolt. This preloading generates a normal force between the faying surfaces and as a result, the required frictional resistance in the slip-critical connection is achieved. While the principle is simple, several…
