S-91358A025 1.045" ID x 2.01" OD ASME B18.2.6; ASTM F959 Type A325 Tension-Indicating Structural Washers

Key Features & Benefits at a Glance

• Visual load verification through orange tension-indicating dye ensures quick, reliable confirmation of proper installation and reduces inspection time
• Exceptional 51,000 lbs tension capacity delivers superior structural integrity for heavy-duty bolting applications requiring maximum reliability
• Precision-engineered dimensions (1.045" ID, 2.01" OD, 0.158-0.165" thickness) guarantee perfect fitment with 1" screw sizes and uniform load distribution
• Rockwell C37 hardness rating provides excellent resistance to deformation under extreme pressure, maintaining consistent performance
• Full compliance with ASME B18.2.6 and ASTM F959 Type A325 standards ensures interchangeability and meets rigorous industrial specifications
• RoHS 3 and REACH compliance eliminates hazardous substances, making them suitable for global industrial applications with strict environmental regulations
• Steel construction with inch system measurements offers durability and compatibility with North American industrial equipment and standards

Professional Applications & Engineering Value

This tension indicating washer solves critical safety challenges in structural steel connections, heavy machinery assembly, and infrastructure projects where bolt preload verification is essential. The orange tension-indicating dye provides immediate visual confirmation that proper installation tension has been achieved, eliminating guesswork and preventing catastrophic joint failures. Manufactured from high-strength steel with precise dimensional control, these washers maintain consistent performance in demanding environments including construction, bridge building, and industrial equipment manufacturing. The combination of 51,000 lbs tension capacity and Rockwell C37 hardness ensures reliable performance in applications subject to vibration, dynamic loads, and extreme weather conditions, making them ideal for critical connections where safety cannot be compromised.

Specification Summary & Compliance

This tension indicating washer features precision dimensions of 1.045" ID, 2.01" OD, and 0.158-0.165" thickness specifically engineered for 1" screw applications. Manufactured to exacting ASME B18.2.6 and ASTM F959 Type A325 specifications with Rockwell C37 hardness certification. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance for industrial applications requiring verified tension indication and superior mechanical properties.