S-91525A143 0.406" ID x 2" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction
• Optimal load distribution and joint integrity with a large 2" outer diameter surface area
• Precise fit for 3/8" fasteners ensured by the 0.406" inner diameter, reducing installation errors
• Durable, long-lasting performance from high-quality stainless steel that resists wear and degradation
• Compliance with strict environmental regulations including RoHS 3 and REACH for global supply chain suitability
• Reliable dimensional consistency in the inch system for seamless integration with existing North American assemblies

Professional Applications & Engineering Value

This 316 stainless steel flat washer is engineered to solve critical challenges in demanding industrial settings. Its primary engineering value lies in its exceptional corrosion resistance, making it ideal for applications exposed to chemicals, saltwater, and high-humidity environments like marine hardware, chemical processing plants, and outdoor infrastructure. The 2" OD provides a wide bearing surface, which helps prevent surface damage, reduces embedment, and distributes clamping force more effectively under bolt heads or nuts. This is crucial for maintaining the integrity of assemblies using 3/8" screw sizes, especially in vibrating machinery or structural frameworks where loosening can lead to failure. By specifying this RoHS 3 and REACH compliant component, engineers ensure not only mechanical reliability but also adherence to international environmental and safety standards.

Specification Summary & Compliance

This flat washer conforms to standard inch-system dimensional specifications with an Outer Diameter of 2", Inner Diameter of 0.406", and a Thickness range of 0.052-0.072". It is manufactured from 316 Stainless Steel and is designed to fit 3/8" screw sizes. The product is verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant as of the latest substance list, ensuring it meets stringent regulatory requirements for hazardous substances.