S-91358A005 0.52" ID x 1.073" OD ASME B18.2.6; ASTM F959 Type A325 Tension-Indicating Structural Washers

Key Features & Benefits at a Glance

• Visual tension confirmation through orange dye provides immediate, reliable load verification during installation and maintenance
• High 12,000 lbs tension capacity ensures secure fastening in demanding structural and industrial applications
• Rockwell C37 hardness rating delivers exceptional durability and resistance to deformation under heavy loads
• Precision dimensional control (0.52" ID, 1.073" OD) guarantees perfect fit for 1/2" screw applications
• Industry-standard compliance with ASME B18.2.6 and ASTM F959 Type A325 ensures consistent performance and interchangeability
• Environmental regulation compliance with RoHS 3 and REACH supports sustainable procurement and workplace safety
• Consistent thickness range (0.104-0.111") provides reliable compression characteristics and uniform load distribution

Professional Applications & Engineering Value

This steel tension indicating washer solves critical safety and reliability challenges in structural bolting applications where proper preload is essential. The orange tension-indicating dye provides visual confirmation that specified tension levels have been achieved, eliminating guesswork in critical connections. Engineered for heavy-duty construction and industrial maintenance, these washers prevent joint failure by ensuring consistent clamping force in structural steel frameworks, bridge construction, and heavy machinery assemblies. The inch system measurement and precise dimensional specifications ensure compatibility with standard 1/2" fasteners, while the high-strength steel construction maintains integrity under dynamic loads and vibration, making them ideal for applications where safety and reliability cannot be compromised.

Specification Summary & Compliance

This tension indicating washer features precise dimensional specifications including 0.52" inner diameter, 1.073" outer diameter, and 0.104-0.111" thickness range for consistent performance. Manufactured to meet ASME B18.2.6 and ASTM F959 Type A325 standards, ensuring dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety requirements for industrial applications worldwide.