S-90313A317 0.688" ID x 3" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Exceptional load distribution due to the large 3" outer diameter, protecting surfaces and reducing point stress on assemblies.
• Precise fit for 5/8" screws with a 0.688" inner diameter, ensuring secure fastening and minimizing installation errors.
• Robust mechanical performance from a substantial 0.240-0.272" thickness, providing reliable, long-term stability under heavy loads.
• Guaranteed environmental compliance with RoHS 3 and REACH standards, meeting strict international regulations for safe use.
• Dimensional accuracy in inch system for seamless integration with standard North American machinery and components.
• Versatile application range as a flat washer, suitable for construction, manufacturing, and maintenance where durability is critical.

Professional Applications & Engineering Value

This 18-8 stainless steel flat washer is engineered to address common industrial challenges such as galvanic corrosion, surface damage, and fastener loosening under vibration. Its corrosion-resistant material ensures longevity in demanding environments like marine, chemical processing, and outdoor infrastructure. The large 3" OD and substantial thickness effectively distribute clamping force, preventing joint failure and protecting soft materials. Designed for 5/8" screw size applications, it provides a precise fit that enhances assembly integrity in heavy machinery, structural steelwork, and transportation equipment, reducing maintenance costs and downtime.

Specification Summary & Compliance

This flat washer adheres to standard inch system dimensions with an Inner Diameter of 0.688", Outer Diameter of 3", and Thickness range of 0.240-0.272". It is manufactured from 18-8 Stainless Steel for consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for industrial use worldwide.