S-99041A211 0.219" ID Square Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance through zinc-plated steel construction, extending service life in demanding environments
• Optimized load distribution with square 0.5" width design, preventing surface damage and maintaining joint integrity
• Precise No. 10 screw compatibility with 0.219" internal diameter, ensuring secure fastening without slippage
• Consistent performance maintained through Rockwell B40 hardness rating for reliable mechanical properties
• Controlled thickness variation (0.042-0.051") enables uniform pressure application across assembly surfaces
• Environmental compliance assurance with RoHS 3 and REACH standards, meeting global regulatory requirements
• Heavy-duty durability in industrial applications where vibration resistance and long-term reliability are critical

Professional Applications & Engineering Value

This zinc-plated steel square washer delivers exceptional engineering value across industrial fastening systems. The square configuration provides significantly larger surface contact area compared to round washers, effectively distributing clamp load and preventing embedment in softer materials. The zinc plating creates a sacrificial barrier against oxidation, making these corrosion-resistant washers ideal for outdoor equipment, electrical enclosures, and manufacturing environments where moisture exposure occurs. With precise 0.219" ID dimensions engineered specifically for No. 10 screw applications, these inch washers eliminate play and maintain alignment during vibration, reducing maintenance frequency in machinery, structural frameworks, and automotive assemblies. The controlled thickness range of 0.042-0.051" ensures consistent compression without compromising the fastened materials.

Specification Summary & Compliance

This square washer features a 0.219" internal diameter with 0.5" width and thickness ranging 0.042-0.051", specifically designed for No. 10 screw applications. Manufactured from zinc-plated steel with Rockwell B40 hardness rating, the product maintains dimensional accuracy per inch measurement standards. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations is verified, ensuring adherence to current substance restriction requirements (SVHC as of 06/14/2023).