S-90452A103 Washers for Square-Neck Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Precise square hole alignment with 0.253" inside width ensures secure fit and prevents rotation during No. 10 screw installation
• Optimized load distribution through 0.561" outer diameter design, reducing surface pressure and material stress
• Consistent performance maintained through controlled thickness range of 0.028-0.034" for reliable seating and spacing
• Environmental compliance assurance with full RoHS 3 and REACH adherence for global manufacturing applications
• Versatile inch system compatibility designed for seamless integration with standard No. 10 screw assemblies
• Enhanced installation efficiency through square hole design that simplifies alignment and reduces assembly time

Professional Applications & Engineering Value

This zinc-plated steel square hole washer delivers exceptional engineering value in industrial fastening applications where vibration resistance and corrosion protection are critical. The precisely engineered square hole design with 0.253" inside width provides superior anti-rotation performance for No. 10 screw assemblies, eliminating common issues of fastener loosening in high-vibration environments. The 0.561" outer diameter ensures optimal load distribution across surfaces, while the zinc plating creates a sacrificial layer that protects against environmental degradation. Ideal for electrical enclosures, machinery guards, and structural assemblies, this washer maintains dimensional stability and performance consistency across temperature variations and mechanical stresses.

Specification Summary & Compliance

Manufactured to precise dimensional standards with 0.561" OD, 0.253" inside width, and controlled thickness range of 0.028-0.034". Designed specifically for No. 10 screw applications in inch measurement systems. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial applications. The zinc-plated steel construction provides consistent performance while meeting international environmental standards for hazardous substance restrictions.