S-95601A390 0.688" ID x 0.938" OD Plastic Washers

Key Features & Benefits at a Glance

• Excellent electrical insulation properties due to the non-conductive hard fiber material, reducing the risk of short circuits in electrical assemblies.
• Superior chemical and moisture resistance ensures long-term reliability in harsh industrial environments without corrosion or degradation.
• Withstands high temperatures up to 230°F, making it ideal for applications involving heat exposure without losing structural integrity.
• Precise dimensional fit with 0.688" ID and 0.938" OD for secure placement on 5/8" screws, minimizing loosening and improving assembly stability.
• Uniform load distribution thanks to the flat design and consistent 0.028-0.034" thickness, protecting surfaces and reducing fastener fatigue.
• Compliance with RoHS 3 and REACH regulations guarantees safety from hazardous substances, supporting eco-friendly and regulated industrial operations.
• Vibration damping and noise reduction from the resilient fiber construction, enhancing equipment longevity and operational quietness.

Professional Applications & Engineering Value

This Red Hard Fiber Flat Washer is engineered to address common industrial challenges, such as electrical insulation needs and exposure to moderate heat or chemicals. Made from durable hard fiber, it provides reliable performance in electrical systems, machinery, and plumbing where non-metallic washers are essential to prevent galvanic corrosion and ensure safety. The precise 0.688" ID and 0.938" OD dimensions, paired with a consistent thickness, offer a snug fit for 5/8" screw size applications, reducing the risk of assembly failures. Its ability to handle temperatures up to 230°F makes it suitable for automotive, HVAC, and manufacturing settings, delivering long-lasting industrial reliability without compromising on regulatory standards like RoHS and REACH.

Specification Summary & Compliance

This flat washer adheres to inch system measurements with an inner diameter of 0.688", outer diameter of 0.938", and thickness ranging from 0.028" to 0.034", ensuring dimensional accuracy for 5/8" screws. It is manufactured from hard fiber and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial and consumer applications. The product is designed for non-rated hardness and optimal performance in temperatures up to 230°F, supporting consistent quality and environmental responsibility.