S-90452A118 Washers for Square-Neck Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise square hole design ensures secure fit and prevents rotation during assembly with 1/4" screws
• Optimized load distribution from 0.68" outer diameter, reducing surface pressure and material fatigue
• Consistent dimensional stability with 0.055-0.065" thickness range for reliable performance in repetitive applications
• Environmental compliance assurance with RoHS 3 and REACH conformity for global supply chain integration
• Enhanced installation efficiency through 0.32" inside width square hole, facilitating quick alignment
• Durable inch-system compatibility for seamless integration with standard North American equipment and fasteners

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this 18-8 stainless steel square hole washer addresses critical challenges in machinery assembly, structural frameworks, and outdoor equipment. The corrosion-resistant properties of 18-8 stainless steel prevent degradation in humid, chemical, or marine environments, significantly extending service life. The square hole design provides superior anti-rotation performance compared to standard round washers, maintaining bolt positioning under vibration and dynamic loads. With precise 0.68" OD and 0.32" inside width, this washer distributes clamping forces evenly across joint surfaces, preventing material deformation in sheet metal, wood, and composite assemblies. These characteristics make it particularly valuable for industrial maintenance, construction equipment, and transportation applications where reliability and corrosion resistance are paramount.

Specification Summary & Compliance

This square hole washer features inch-system dimensions with 0.68" outer diameter, 0.32" inside width, and 0.055-0.065" thickness, engineered for compatibility with 1/4" screws. Manufactured from 18-8 stainless steel, it provides excellent mechanical properties without hardness rating requirements. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental standards for hazardous substance restrictions (SVHC compliance as of 06/14/2023).