S-90126A207 0.344" ID x 0.688" OD SAE Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with zinc plating that extends service life in humid or outdoor environments
• Exceptional load distribution thanks to precise 0.688" OD that prevents surface damage and fastener embedment
• Perfect fit for 5/16" fasteners with 0.344" ID ensuring secure installation without play or misalignment
• Grade 5 strength reliability providing consistent performance under mechanical stress and vibration
• Versatile thickness range (0.051-0.080") accommodates various assembly requirements and gap-filling needs
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for environmentally responsible manufacturing
• SAE standard compatibility ensuring interchangeability and reliable performance in inch-based systems

Professional Applications & Engineering Value

These zinc-plated steel flat washers deliver critical engineering solutions where corrosion resistance and load distribution are paramount. The SAE flat washer design with precise 0.344" ID creates optimal alignment for 5/16" screw applications, preventing thread damage and maintaining clamping force integrity. In industrial machinery, automotive assemblies, and construction equipment, the Grade 5 material strength withstands vibration-induced loosening while the zinc plating provides sacrificial protection against galvanic corrosion. The controlled thickness variation (0.051-0.080") accommodates minor surface irregularities, ensuring full contact pressure across mating surfaces. These industrial washers solve common fastener failure points by distributing bearing loads beyond the fastener head diameter, significantly extending service life in demanding mechanical applications.

Specification Summary & Compliance

Manufactured to SAE standards with precise dimensional tolerances: 0.344" inner diameter, 0.688" outer diameter, and thickness range of 0.051-0.080". Constructed from Grade 5 steel with zinc-plated surface treatment for enhanced corrosion resistance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no substances of very high concern above threshold limits. Designed specifically for use with 5/16" fasteners in inch-system applications requiring reliable load distribution and surface protection.