S-95348A119 1.57" ID x 3.01" OD ASME B18.2.6; ASTM F959 Type A490 Tension-Indicating Structural Washers

Key Features & Benefits at a Glance

• Visual Load Confirmation - Orange tension-indicating dye provides immediate visual verification of proper installation and tension levels, reducing inspection time and preventing under-tightening failures.
• Exceptional Load Capacity - Withstands up to 148,000 lbs tension, ensuring reliable performance in heavy-duty structural applications where failure is not an option.
• Premium Material Construction - Zinc-plated steel offers excellent corrosion resistance and durability, extending service life in demanding industrial environments.
• Precision Hardness Rating - Rockwell C37 hardness provides optimal balance between strength and ductility, preventing deformation under extreme loads.
• Industry Standard Compliance - Manufactured to ASME B18.2.6 and ASTM F959 Type A490 specifications, ensuring interchangeability and performance reliability across industrial applications.
• Regulatory Compliance Assurance - RoHS 3 and REACH compliant for environmentally responsible sourcing and workplace safety compliance in global operations.
• Optimized Dimensional Fit - Specifically designed for 1 1/2" screws with precise 1.57" ID and 3.01" OD dimensions for perfect alignment and load distribution.

Professional Applications & Engineering Value

This tension indicating washer addresses critical safety concerns in structural engineering and heavy machinery assembly where bolt tension verification is paramount. The zinc-plated steel construction combined with Rockwell C37 hardness ensures the washer maintains integrity under extreme vibrational and dynamic loading conditions common in bridge construction, industrial equipment, and structural steel frameworks. The orange tension-indicating dye provides immediate visual confirmation of proper installation, eliminating guesswork and reducing the risk of catastrophic joint failure. Engineered specifically for 1 1/2" screw applications, this washer delivers reliable performance in critical connections where traditional torque methods may be insufficient for tension verification.

Specification Summary & Compliance

Manufactured to exacting ASME B18.2.6 dimensional standards and ASTM F959 Type A490 performance requirements, ensuring precise fit and consistent load-bearing capabilities. The washer features dimensional specifications of 1.57" ID, 3.01" OD, and thickness ranging from 0.158" to 0.280" for optimal compression characteristics. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental responsibility and workplace safety standards are met for industrial applications worldwide.