S-90313A505 0.172" ID x 0.625" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Enhanced load distribution from the 0.625" outer diameter, protecting surfaces and preventing fastener embedment.
• Precise fit for No. 8 screws with a 0.172" inner diameter, ensuring secure fastening and reducing assembly errors.
• Excellent mechanical strength provided by Rockwell B68 hardness, offering reliable performance under vibration and stress.
• Consistent dimensional accuracy with a thickness range of 0.050-0.080", guaranteeing uniform performance in batch applications.
• Full regulatory compliance with RoHS 3 and REACH, making them safe for use in regulated industries and global markets.
• Long-lasting durability due to the material's inherent properties, reducing replacement frequency and maintenance costs.

Professional Applications & Engineering Value

These 18-8 stainless steel flat washers are engineered to address common industrial challenges such as galvanic corrosion, surface damage, and fastener loosening. The corrosion-resistant material ensures longevity in demanding environments like marine, chemical processing, and outdoor machinery, where exposure to moisture and chemicals is frequent. With precise dimensions including a 0.172" ID for No. 8 screws and a 0.625" OD, they provide optimal load distribution, preventing stress concentration on soft materials and maintaining joint integrity under dynamic loads. This makes them invaluable in assembly lines, electrical enclosures, and automotive systems, where reliability and compliance with RoHS and REACH standards are critical for safety and environmental regulations.

Specification Summary & Compliance

This flat washer adheres to inch system measurements with an inner diameter of 0.172", outer diameter of 0.625", and thickness ranging from 0.050" to 0.080", designed specifically for No. 8 screw sizes. Manufactured from 18-8 stainless steel with a hardness of Rockwell B68, it ensures consistent performance and durability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for use in industrial applications requiring strict environmental and safety standards.