S-98026A033 0.562" ID x 1.375" OD ASME B18.21.1 Oversized Washers

Key Features & Benefits at a Glance

• Exceptional load distribution with a 1.375" outer diameter, reducing surface pressure and preventing damage to assembled materials
• Superior corrosion resistance from zinc yellow-chromate plating, extending service life in harsh industrial environments
• High-strength Grade 8 construction with Rockwell C38 hardness for reliable performance under heavy loads and vibration
• Precision dimensional accuracy with 0.562" inner diameter ensuring perfect fit for 1/2" fasteners
• Industry-standard compliance with ASME B18.21.1 specifications for consistent quality and interchangeability
• Enhanced durability with thickness ranging from 0.086" to 0.132" for optimal compression and stress resistance
• Regulatory compliance with REACH standards, ensuring safe use in various industrial applications

Professional Applications & Engineering Value

This Grade 8 USS flat washer delivers critical engineering value in heavy-duty applications where load distribution and corrosion resistance are paramount. The zinc yellow-chromate plated steel construction provides superior protection against rust and chemical exposure, making it ideal for outdoor equipment, construction machinery, and marine applications. With its Rockwell C38 hardness and ASME B18.21.1 compliance, this washer effectively prevents bolt loosening under vibration and maintains clamping force in high-stress assemblies. The precise 1/2" inner diameter ensures perfect alignment with standard fasteners, while the generous outer diameter distributes pressure evenly across connected surfaces, preventing material deformation and extending the life of your assemblies.

Specification Summary & Compliance

This USS flat washer features precise dimensional specifications including 0.562" ID, 1.375" OD, and thickness ranging from 0.086" to 0.132". Manufactured to ASME B18.21.1 standards for dimensional accuracy and performance consistency. The washer is constructed from Grade 8 steel with Rockwell C38 hardness and features zinc yellow-chromate plating for enhanced corrosion protection. Compliant with REACH regulations (EC 1907/2006) regarding substance restrictions, ensuring environmental and safety standards are met for industrial use across various sectors.