S-93852A137 0.688" ID x 1.75" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 stainless steel construction
• Exceptional durability and load distribution with a heavy-duty USS flat design and Rockwell B68 hardness
• Precise fit for 5/8" fasteners ensuring secure and stable assembly in industrial applications
• Reliable performance under pressure with a large 1.75" outer diameter for enhanced surface coverage
• Guaranteed dimensional consistency and mechanical properties meeting ASME B18.21.1 standards
• Safe for sensitive applications with full compliance to RoHS 3 and REACH environmental regulations
• Long-term cost efficiency by reducing maintenance and replacement needs in corrosive conditions

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 316 Stainless Steel USS Flat Washers provide critical protection against galvanic and chemical corrosion, making them ideal for marine, chemical processing, and outdoor infrastructure. The USS flat washer design ensures even load distribution, preventing surface damage and bolt loosening under high vibration. With a 5/8" inner diameter and 1.75" OD, they offer a precise fit for standard inch-system bolts, while the Rockwell B68 hardness maintains structural integrity. These washers solve common issues like fastener failure and material degradation, delivering reliable performance in heavy-duty applications where corrosion resistance and compliance with ASME B18.21.1 are paramount.

Specification Summary & Compliance

This washer meets precise dimensional requirements with an ID of 0.688", OD of 1.75", and thickness range of 0.108-0.160", adhering to ASME B18.21.1 standards for flat washers in the inch system. It is manufactured from 316 Stainless Steel with a hardness of Rockwell B68, ensuring consistent quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for global industrial use.