S-91090A107 0.266" ID x 0.875" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh environments
• Precise dimensional fit with 0.266" ID and 0.875" OD ensuring reliable seating for 1/4" fasteners
• Consistent load distribution through controlled 0.042-0.051" thickness, minimizing surface damage
• Regulatory compliance assurance with RoHS 3 and REACH standards for global industrial applications
• Enhanced durability through steel material properties, maintaining integrity under mechanical stress
• Broad compatibility with inch-system components, simplifying inventory management
• Cost-effective protection against galvanic corrosion and surface wear in assembled structures

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these zinc-plated steel flat washers provide critical corrosion protection while maintaining dimensional stability under load. The inch-system sizing (0.266" ID x 0.875" OD) ensures perfect compatibility with 1/4" fasteners, preventing loosening from vibration in automotive assemblies, construction frameworks, and manufacturing equipment. The zinc plating creates a sacrificial layer that significantly extends component life in humid or chemically exposed settings, while the precise thickness control (0.042-0.051") guarantees uniform pressure distribution across mating surfaces. These industrial washers solve common engineering challenges including surface marring, galvanic corrosion between dissimilar metals, and fastener embedment in soft materials.

Specification Summary & Compliance

This flat washer maintains standard inch-system dimensions with 0.266" inner diameter, 0.875" outer diameter, and thickness ranging 0.042-0.051" for consistent performance. Manufactured from zinc-plated steel for optimal mechanical properties, the product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety. The washer is specifically designed for use with 1/4" screws in various industrial applications where corrosion resistance and dimensional accuracy are critical.