S-90108A175 0.688" ID x 1.75" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior load distribution with 1.75" outer diameter to prevent surface damage and maintain joint integrity under high stress
• Enhanced corrosion resistance through zinc-plated steel construction, extending service life in demanding industrial environments
• Reliable Grade 5 strength rating ensures consistent performance in heavy-duty mechanical assemblies and structural applications
• Precision dimensional control with 0.688" inner diameter provides secure fitment for 5/8" fasteners, reducing installation errors
• Compliance with ASME B18.21.1 standard guarantees interchangeability and quality assurance across industrial maintenance and repair operations
• Environmental regulation compliance with RoHS 3 and REACH standards for safe use in global manufacturing applications
• Optimized thickness range (0.108-0.160") accommodates varying compression requirements while maintaining structural stability

Professional Applications & Engineering Value

This USS flat washer delivers critical engineering value through its zinc-plated steel construction and Grade 5 strength classification. The combination addresses common industrial challenges including galvanic corrosion in outdoor applications, vibration-induced loosening in machinery, and surface damage from high clamping forces. The 1.75" OD provides substantial bearing surface for 5/8" fasteners, effectively distributing load across softer materials while the precise 0.688" ID ensures proper centering and alignment. These industrial washers are engineered for construction equipment, agricultural machinery, structural steel connections, and heavy manufacturing applications where ASME B18.21.1 compliance is mandatory for safety and reliability.

Specification Summary & Compliance

This flat washer features dimensional specifications including 0.688" inner diameter, 1.75" outer diameter, and thickness ranging 0.108-0.160" to accommodate standard 5/8" screw sizes. Manufactured to ASME B18.21.1 standards for dimensional accuracy and performance reliability. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for international industrial supply chains and environmentally conscious manufacturing operations.