S-90313A400 0.203" ID x 0.75" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction, ensuring long-term reliability in humid or chemically aggressive environments.
• Precise dimensional fit with 0.203" ID and 0.75" OD, providing optimal load distribution and preventing fastener loosening in No. 10 screw applications.
• Enhanced assembly integrity through consistent thickness (0.033-0.047"), reducing the risk of joint failure under vibration or dynamic loads.
• Compliance with stringent environmental regulations, including RoHS 3 and REACH, for safe use in global industrial supply chains.
• Excellent surface durability without rated hardness limitations, maintaining performance in repetitive disassembly and reassembly cycles.
• Broad compatibility with inch-system fasteners, streamlining inventory and procurement for maintenance and manufacturing operations.

Professional Applications & Engineering Value

This 18-8 stainless steel flat washer delivers critical engineering value by addressing common industrial challenges such as galvanic corrosion, load concentration, and regulatory compliance. Its corrosion-resistant properties make it ideal for applications in food processing, marine hardware, and outdoor equipment, where moisture and chemicals degrade ordinary washers. The precise 0.203" ID ensures a snug fit on No. 10 screws, preventing misalignment and distributing clamp load evenly across surfaces—reducing wear on connected components. Manufactured to inch-system standards, this washer supports efficient assembly lines and maintenance protocols, while its RoHS 3 and REACH compliance guarantees adherence to environmental safety mandates, minimizing supply chain disruptions in regulated industries like automotive and electronics.

Specification Summary & Compliance

This flat washer features an inner diameter of 0.203", outer diameter of 0.75", and thickness range of 0.033-0.047", designed for use with No. 10 screw sizes in inch-based systems. It is manufactured from 18-8 stainless steel for consistent performance and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material transparency for industrial and export applications.