What is the purpose of using twist-off type tension control bolts?

The primary purpose of using twist-off type tension control bolts is to ensure that the correct tension is achieved during installation. These bolts are designed with a mechanism that provides an audible and visual cue when the proper tension has been reached. As the bolt is tightened, a special component within the bolt will twist off once the specified tension is achieved, which prevents over-tightening and helps maintain the integrity of the connection.

This feature is particularly important in structural applications, where the strength and stability of the connection can significantly influence the overall performance of the structure. The use of tension control bolts helps ensure that the structural components are securely fastened to withstand loads and stresses without failure, making them a reliable choice for high-stakes construction scenarios.

While aesthetic purposes and cost reduction are relevant factors in construction materials and methods, they are not the primary objectives for using twist-off type tension control bolts. Simplification of the installation process is a consideration in the design, but the ultimate goal remains to achieve the correct tension for safety and performance.