The Biggest Myth in Bolt Tightening: Why Torque Does Not Equal Tension

Thinking that reaching the torque value means the bolt is properly tightened. Torque is a rotational force — the force required to rotate the nut along the bolt threads. You can apply a very high torque value to tighten a bolt without actually achieving proper tightness. On construction sites, many factors cause additional torque increase, such as dirt, dust, high temperatures, rust, rain, moisture, damaged threads, poor thread precision, excessive surface coating, improper storage, insufficient lubrication, and even issues with the torque tool itself.

Learn how FULLERKREG® DTI Squirtern Washers eliminate torque uncertainty with direct visual tension confirmation: FULLERKREG® ASTM F959 DTI Squirtern Washers.