S-90377A207 0.688" ID x 1.5" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from Black-Oxide 18-8 Stainless Steel, ideal for harsh environments and extending service life
• Precise dimensional fit with 0.688" ID and 1.5" OD, ensuring reliable load distribution and secure fastening for 5/8" screws
• Enhanced durability with a thickness range of 0.110-0.140", providing consistent performance under pressure
• Broad industrial compatibility due to inch system measurement, suitable for a wide range of machinery and equipment
• Environmental and regulatory compliance with RoHS 3 and REACH, ensuring safe use in global markets
• Heavy-duty application readiness for demanding assemblies, reducing maintenance and replacement frequency

Professional Applications & Engineering Value

This Black-Oxide 18-8 Stainless Steel flat washer is engineered to address common industrial challenges such as corrosion-induced failure and inconsistent load bearing. The Black-Oxide surface treatment enhances the natural corrosion resistance of 18-8 stainless steel, making it ideal for outdoor, marine, or chemical-exposed environments. With precise inner and outer diameters (0.688" ID x 1.5" OD), it ensures optimal fit for 5/8" screw size applications, preventing loosening and distributing loads evenly in heavy-duty assemblies. Its robust construction supports long-term reliability in sectors like construction, automotive, and machinery, minimizing downtime and maintenance costs while adhering to strict industry standards for flat washers.

Specification Summary & Compliance

This flat washer features inch system dimensions with an ID of 0.688", OD of 1.5", and thickness of 0.110-0.140", designed for 5/8" screw sizes. It is manufactured from 18-8 Stainless Steel with a Black-Oxide finish for enhanced performance. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety standards for industrial use worldwide.