S-90313A265 0.348" ID x 1.625" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Excellent load distribution with a large 1.625" outer diameter, protecting surfaces and preventing fastener embedment.
• Precise fit for 5/16" fasteners ensured by the 0.348" inner diameter, providing secure and stable assembly.
• Versatile thickness range (0.050" - 0.080") accommodates minor variations and ensures proper clamping force.
• Compliance with major environmental regulations including RoHS 3 and REACH, making them suitable for global supply chains.
• Durable material properties offer good strength and toughness for demanding industrial applications.
• Broad compatibility with inch-system components, simplifying sourcing and inventory for maintenance and production.

Professional Applications & Engineering Value

These 18-8 stainless steel flat washers are engineered to solve common industrial challenges such as surface damage, galvanic corrosion, and assembly failure. The corrosion-resistant material ensures longevity in moist or chemical-exposed environments, from marine equipment to food processing machinery. The precise 0.348" ID and 1.625" OD provide optimal load distribution, preventing bolt loosening and joint fatigue under vibration or dynamic loads. This makes them a reliable choice for heavy-duty washers in construction, automotive, and machinery assembly, where consistent performance and RoHS and REACH compliance are critical for safety and regulatory adherence.

Specification Summary & Compliance

This flat washer conforms to standard inch dimensions with an inner diameter of 0.348", outer diameter of 1.625", and thickness ranging from 0.050" to 0.080", designed for use with 5/16" screws. Manufactured from 18-8 stainless steel, it meets common industry requirements for general-purpose fastening. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from restricted substances and safe for various industrial applications.