S-93852A151 1.625" ID x 3.5" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
• Optimal load distribution through the large 3.5" OD design, preventing surface damage and joint loosening
• Precise fit for 1 1/2" screws with 1.625" ID ensuring secure fastening and reduced installation time
• Heavy-duty durability with thickness ranging from 0.153" to 0.213" for high-stress industrial applications
• Standardized reliability meeting ASME B18.21.1 specifications for consistent quality and interchangeability
• Environmental compliance with RoHS 3 and REACH regulations for safe use in regulated industries
• Universal compatibility with inch system fasteners, making them ideal for North American industrial equipment

Professional Applications & Engineering Value

This USS flat washer delivers exceptional engineering value in demanding industrial environments where corrosion resistance and load distribution are critical. The 18-8 stainless steel composition provides excellent protection against rust and chemical exposure, making these heavy-duty flat washers ideal for construction equipment, marine applications, and chemical processing facilities. The precise 1.625" ID ensures perfect alignment with 1 1/2" screw sizes, while the substantial 3.5" OD effectively distributes clamping force across wider surfaces, preventing material deformation and maintaining joint integrity under vibration and dynamic loads. Engineered to ASME B18.21.1 standards, these washers offer reliable performance in structural assemblies, machinery foundations, and heavy equipment maintenance where consistent dimensional accuracy is paramount for operational safety and reduced maintenance cycles.

Specification Summary & Compliance

This USS flat washer features dimensional specifications of 1.625" inner diameter and 3.5" outer diameter with thickness ranging from 0.153" to 0.213". Manufactured to ASME B18.21.1 standards for dimensional consistency and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.