S-90313A251 0.141" ID x 1.25" 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.
• Optimal load distribution with a 1.25" outer diameter, helping to prevent surface damage and maintain joint integrity under pressure.
• Precise fit for No. 5 screws thanks to the 0.141" inner diameter, reducing installation errors and improving assembly efficiency.
• Consistent dimensional stability with a thickness range of 0.050-0.080", providing reliable performance in varied clamping applications.
• Environmental regulation compliance including RoHS 3 and REACH, ensuring safe use in global markets and restricted substance-free assemblies.
• Durable material properties offering excellent strength and wear resistance for repeated use in industrial settings.
• Versatile inch system compatibility, making it easy to integrate into existing imperial measurement-based designs and maintenance routines.

Professional Applications & Engineering Value

This flat washer is engineered to address common challenges in industrial assemblies, such as corrosion-induced failure and uneven stress distribution. The 18-8 stainless steel material provides inherent resistance to rust and oxidation, making it ideal for applications in marine, food processing, and outdoor equipment where moisture exposure is frequent. Its precise 0.141" ID ensures a snug fit with No. 5 screws, minimizing loosening due to vibration—a critical factor in machinery and automotive components. The large 1.25" OD effectively spreads load over a wider area, protecting softer materials from indentation and preserving the integrity of bolted connections. By incorporating RoHS and REACH compliant materials, this washer supports sustainable manufacturing practices without compromising on corrosion resistance or mechanical performance, delivering dependable value in demanding engineering environments.

Specification Summary & Compliance

This flat washer adheres to standard inch measurement tolerances, with an inner diameter of 0.141", outer diameter of 1.25", and thickness ranging from 0.050" to 0.080". It is designed for use with No. 5 screw sizes and manufactured from 18-8 stainless steel for consistent performance. The product conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring compliance with restrictions on hazardous substances and supporting environmentally responsible procurement.