S-90474A168 0.469" ID x 1.125" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with black-oxide finish for extended service life in harsh environments
• Precise dimensional accuracy ensures perfect fit with 7/16" screws and consistent load distribution
• Enhanced durability through quality steel construction resistant to wear and deformation
• Industry-standard compliance with ASME B18.21.1 specifications for reliable mechanical performance
• Environmental regulation adherence meeting RoHS 3 and REACH requirements for safe industrial use
• Optimal thickness range (0.056-0.071") provides reliable spacing and vibration resistance
• Broad industrial compatibility with inch-system fasteners across various mechanical applications

Professional Applications & Engineering Value

This black-oxide steel flat washer delivers critical engineering solutions where corrosion resistance and dimensional precision are paramount. The black-oxide surface treatment creates a protective barrier against moisture and chemical exposure, significantly extending component life in demanding environments like outdoor equipment, automotive assemblies, and industrial machinery. Engineered to ASME B18.21.1 standards, these flat washers maintain consistent thickness and precise inner/outer diameters (0.469" ID, 1.125" OD) to prevent loosening under vibration and ensure uniform clamping force distribution for 7/16" screw applications. The robust steel construction provides reliable performance in high-stress mechanical fastening while the inch-system compatibility makes them ideal for maintenance and manufacturing operations requiring standardized components.

Specification Summary & Compliance

Manufactured to exacting ASME B18.21.1 dimensional standards with inner diameter of 0.469", outer diameter of 1.125", and thickness ranging 0.056-0.071" for consistent performance with 7/16" screws. This black-oxide steel flat washer complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors while maintaining superior corrosion resistance properties.