S-90313A236 0.531" ID x 2.5" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for humid or chemically aggressive environments.
• Exceptional load distribution due to the large 2.5" OD, protecting surfaces and preventing fastener embedment.
• Precise fit for 1/2" screws with a 0.531" ID, ensuring secure placement and reducing assembly errors.
• Durable mechanical performance from a thickness range of 0.106" to 0.130", providing reliable, long-lasting service.
• Guaranteed environmental compliance meeting RoHS 3 and REACH standards, ensuring safe use in regulated industries.
• Broad industrial compatibility designed in the inch measurement system for seamless integration with standard North American equipment.

Professional Applications & Engineering Value

This flat washer is engineered from 18-8 stainless steel to address common industrial challenges such as corrosion-induced failure and surface damage under heavy loads. Its robust 2.5" OD effectively distributes clamping force, preventing joint loosening and material deformation in machinery, construction, and marine applications. The precise 0.531" ID ensures a snug fit on 1/2" screws, minimizing vibration-related issues and enhancing assembly integrity. By combining corrosion resistance with dimensional accuracy, this washer reduces maintenance frequency and extends the lifespan of critical components, making it a reliable choice for demanding engineering projects.

Specification Summary & Compliance

This flat washer adheres to standard inch dimensions with an Inside Diameter (ID) of 0.531", Outside Diameter (OD) of 2.5", and Thickness ranging from 0.106" to 0.130", suitable for use with 1/2" screw size. Manufactured from 18-8 Stainless Steel, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industrial reliability without hazardous substances.