Load Indicating Washers

Load indicating washers, also known as direct tension indicators (DTIs), are used to ensure accurate tension in bolted joints. These washers are equipped with either protrusions that collapse to a specified gap as the bolt is tightened or bright silicone that releases once the assembly reaches the specified tension, providing a reliable indication of the correct torque. These washers are particularly valuable in applications where precise bolt tension is critical, such as in steel construction, heavy machinery assembly, and various industrial applications. The use of load indicating washers helps overcome challenges of traditional torque methods, which can be affected by factors like rust, wear and tear, and environmental conditions.

Huyett’s selection of load indicating washers come in a style that emits bright silicone when it reaches the proper tension. These washers are available in steel with plain or mechanical galvanized finishes to offer corrosion resistance and durability. The simplicity and cost-effectiveness of these washers make them an attractive solution for ensuring every bolt is properly tensioned, especially in industries where critical joint failure could lead to significant consequences.

No, they are intended for single use. The washers with protrusions are permanently deformed once the tension is achieved, and the washers with emitting silicone can only perform once.

Unlike standard washers, these washers provide a direct indication of bolt tension. Standard washers are better suited for low-impact, general-use applications.