S-90126A512 0.188" ID x 0.438" OD ASME B18.21.1 SAE Washers

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Precise dimensional fit (0.188" ID x 0.438" OD) ensures perfect alignment and load distribution for No. 8 screws
• Reliable load bearing surface protects components from damage and prevents fastener loosening under vibration
• Industry-standard compliance with ASME B18.21.1 guarantees consistent quality and interchangeability
• Environmental regulation adherence through RoHS 3 and REACH compliance for global supply chain compatibility
• Versatile thickness range (0.036-0.065") accommodates various assembly requirements and tension adjustments
• SAE designation compatibility ensures seamless integration with existing inch-system mechanical assemblies

Professional Applications & Engineering Value

These SAE flat washers deliver critical engineering solutions for industrial applications where vibration resistance and surface protection are paramount. The zinc-plated steel construction provides superior corrosion protection in harsh environments, while the precise 0.188" ID and 0.438" OD dimensions ensure optimal load distribution for No. 8 screw assemblies. Engineered to ASME B18.21.1 standards, these washers prevent fastener embedment, reduce friction, and maintain clamping force in automotive, machinery, and electrical enclosure applications where reliable performance under stress is non-negotiable.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 specifications with precise dimensional tolerances for inch-system applications. The washers feature zinc-plated steel construction with internal diameter of 0.188", outer diameter of 0.438", and thickness range of 0.036-0.065" specifically designed for No. 8 screw size. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and global market acceptance.