S-90108A035 0.688" ID x 1.75" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance through zinc plating that protects against rust and extends service life in harsh environments
• Optimal load distribution with 1.75" outer diameter design that prevents surface damage and maintains joint integrity
• Precise 5/8" screw compatibility with 0.688" inner diameter ensuring perfect fit and secure fastening
• Enhanced durability from zinc-plated steel construction that withstands heavy-duty industrial applications
• Industry-standard compliance with ASME B18.21.1 specifications guaranteeing consistent quality and performance
• Environmental responsibility through RoHS 3 and REACH compliance for safe, sustainable operations
• Reliable mechanical performance with thickness range of 0.108-0.160" providing consistent spacing and vibration resistance

Professional Applications & Engineering Value

These USS flat washers deliver exceptional engineering value in demanding industrial applications where corrosion resistance and load distribution are critical. The zinc-plated steel construction provides superior protection against environmental factors, making them ideal for outdoor equipment, construction machinery, and marine applications. The precise 0.688" ID and 1.75" OD dimensions ensure perfect compatibility with 5/8" screws, preventing loosening under vibration and maintaining joint integrity. Engineered to ASME B18.21.1 standards, these washers solve common industrial challenges including surface damage prevention, bolt head protection, and consistent load transfer across fastened assemblies in mechanical systems and structural applications.

Specification Summary & Compliance

Manufactured to exact ASME B18.21.1 specifications with inch system measurements, these USS flat washers feature precise dimensional tolerances including 0.688" inner diameter and 1.75" outer diameter with thickness ranging 0.108-0.160". The products are fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting the latest environmental and safety standards for industrial hardware components. Designed specifically for 5/8" screw applications, these washers provide reliable performance in mechanical fastening systems requiring consistent quality and regulatory compliance.