S-90452A114 Washers for Square-Neck Bolts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction for prolonged service life in demanding environments
• Precise square hole alignment with 0.812" inside width ensures secure fit and prevents rotation with 3/4" screws
• Optimized load distribution through 1.375" outer diameter design minimizes surface pressure and material stress
• Consistent dimensional stability with 0.055-0.065" thickness range maintains reliable performance under compression
• Simplified inventory management using inch measurement system compatible with standard North American fastener specifications
• Environmental compliance assurance meeting RoHS 3 and REACH standards for responsible manufacturing practices
• Versatile industrial application suitable for machinery, structural assemblies, and heavy equipment requiring square-head fasteners

Professional Applications & Engineering Value

This zinc-plated steel square hole washer addresses critical challenges in industrial fastening systems where standard round washers fail to provide adequate anti-rotation properties. The precisely engineered 0.812" inside width creates a secure interface with square-head bolts and screws, eliminating rotational movement that can lead to joint loosening under vibration or dynamic loads. The 1.375" outer diameter provides substantial bearing surface area, effectively distributing clamp load across a wider area to prevent surface damage and maintain joint integrity. Manufactured from zinc-plated steel, these washers deliver reliable corrosion protection for applications in manufacturing facilities, construction projects, and outdoor equipment where environmental exposure is a concern. The combination of precise dimensional control and durable material construction makes these square hole washers essential components for maintaining long-term fastening reliability in demanding industrial environments.

Specification Summary & Compliance

This square hole washer features inch system dimensions with 1.375" OD, 0.812" inside width, and 0.055-0.065" thickness, engineered specifically for 3/4" screw size applications. The product maintains dimensional accuracy suitable for industrial fastener standards and is manufactured from zinc-plated steel for consistent performance. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial components.