Direct Tension Indicator (DTI) Washers

DTI Washers - Direct Tension Indicator Washers

Direct Tension Indicator (DTI) washers offer a precise way to verify bolt tension during structural steel assembly. Designed for use with A325 structural bolts, these washers feature raised bumps that compress as the bolt is tightened. When properly installed, they confirm that the bolt has reached the required clamping force, without the need for torque readings or extra tools.

DTI washers are available in both plain and mechanically galvanized finishes, making them suitable for indoor and exterior applications alike. Their built-in feedback mechanism helps ensure consistency and code compliance on steel connections in buildings, bridges, and infrastructure.

DTI Squirter Washers – Visual Proof of Proper Tension

DTI squirter washers take the guesswork out of bolt tensioning. Designed specifically for A325 hex bolts, these washers include slotted bumps filled with orange silicone. As the bolt is tightened and proper tension is achieved, the silicone visibly squeezes out from the edges giving installers and inspectors instant confirmation that the connection is properly loaded.

Available in a mechanically galvanized finish, squirter washers are especially useful in critical applications where speed, accuracy, and visible verification are essential.