S-91525A135 0.344" ID x 3" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 316 stainless steel material, ideal for harsh industrial and marine environments.
• Precise dimensional fit with 0.344" inner diameter designed specifically for 5/16" screws, ensuring secure fastening.
• Enhanced load distribution with a large 3" outer diameter, reducing surface pressure and preventing damage.
• Durable construction with a thickness range of 0.051-0.080", providing reliable performance under stress.
• Compliance with environmental standards, meeting RoHS 3 and REACH regulations for safe industrial use.
• Broad compatibility with inch-system fasteners, simplifying procurement and installation.
• Long-lasting reliability in demanding applications, minimizing maintenance and replacement costs.

Professional Applications & Engineering Value

This 316 stainless steel flat washer is engineered to address common industrial challenges such as corrosion, vibration loosening, and surface damage. Its high-grade material offers exceptional resistance to chemicals, saltwater, and extreme temperatures, making it suitable for marine, chemical processing, and outdoor applications. The precise inch-system dimensions—3" OD and 0.344" ID—ensure optimal fit for 5/16" screw sizes, distributing loads evenly to prevent bolt failure and extend equipment lifespan. With a flat design and consistent thickness, it provides stable support in assemblies, reducing the risk of fastener fatigue. This washer is ideal for heavy-duty industrial uses where durability and regulatory compliance are critical, supporting efficient and safe operations.

Specification Summary & Compliance

This flat washer adheres to standard inch-system measurements with an inner diameter of 0.344", outer diameter of 3", and thickness ranging from 0.051" to 0.080", designed for compatibility with 5/16" screws. It is manufactured from 316 stainless steel for robust performance and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory adherence in industrial applications.