S-90313A221 0.125" ID x 0.625" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Precise dimensional fit with 0.125" inner diameter and 0.625" outer diameter, ensuring accurate alignment and load distribution for No. 4 screws.
• Enhanced durability with a thickness range of 0.039" to 0.052", providing consistent performance under pressure.
• Compliance with strict regulations, including RoHS 3 and REACH, for safe use in global industrial markets.
• Broad compatibility with inch-system fasteners, simplifying sourcing and assembly in diverse applications.
• Reliable material quality that resists rust and wear, reducing maintenance needs and downtime.

Professional Applications & Engineering Value

This 18-8 stainless steel flat washer is engineered to address common industrial challenges, such as fastener loosening and material degradation. Its corrosion-resistant properties make it suitable for demanding environments like marine, chemical processing, and outdoor equipment, where moisture and chemicals are prevalent. The precise 0.125" ID and 0.625" OD ensure a snug fit for No. 4 screw sizes, distributing loads evenly to prevent surface damage and extend assembly life. By using these flat washers, professionals achieve reliable fastening solutions that enhance safety and reduce long-term costs in machinery, electronics, and structural applications.

Specification Summary & Compliance

This washer adheres to inch-system standards with an inner diameter of 0.125", outer diameter of 0.625", and thickness ranging from 0.039" to 0.052". It is manufactured from 18-8 stainless steel and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity for industrial use.