S-91525A321 0.203" ID x 0.625" OD Oversized Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance in harsh environments due to 316 stainless steel composition, ideal for chemical processing and marine applications.
• Precise dimensional fit with 0.203" ID and 0.625" OD ensures reliable performance with No. 10 screws, minimizing loosening and vibration issues.
• Enhanced durability and load distribution from a thickness range of 0.060-0.090" and Rockwell B68 hardness, extending service life under heavy-duty conditions.
• Superior chemical resistance compared to standard stainless steels, providing long-term reliability in acidic or chloride-exposed settings.
• Full regulatory compliance with RoHS 3 and REACH standards, ensuring safe use in regulated industries without hazardous substances.
• Broad industrial compatibility as an inch-system flat washer, suitable for machinery, construction, and OEM assemblies requiring consistent sizing.
• Reduced maintenance costs through high material integrity, resisting pitting and crevice corrosion in demanding operational climates.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 316 stainless steel flat washers address critical challenges like equipment degradation and fastener failure. The high molybdenum content in 316 grade delivers superior resistance to corrosive agents such as saltwater, acids, and industrial chemicals, making them ideal for marine hardware, chemical processing plants, and food processing equipment. With precise inch-system dimensions (0.203" ID x 0.625" OD), they ensure a secure fit for No. 10 screws, preventing misalignment and distributing loads evenly to protect connected components. This combination of material excellence and dimensional accuracy minimizes downtime and replacement frequency, offering long-term cost savings in heavy-duty and corrosive environments where reliability is paramount.

Specification Summary & Compliance

This flat washer adheres to standard inch-system tolerances with an internal diameter of 0.203", external diameter of 0.625", and thickness ranging from 0.060" to 0.090", designed specifically for No. 10 screw sizes. The material meets 316 stainless steel specifications with a Rockwell B68 hardness for consistent mechanical performance. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial applications.