S-91755A149 0.564" ID x 0.89" OD Self-Retaining Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with self-retaining design that maintains position during assembly and operation
• Excellent temperature performance from -40°F to 180°F for reliable operation in extreme environments
• High durability with Rockwell R120 hardness rating for extended service life under mechanical stress
• Dual-system compatibility with both inch (3/8") and metric (M10) screw sizes for global application flexibility
• Precision dimensional control with 0.564" ID and 0.89" OD ensuring consistent fit and optimal load distribution
• Environmental compliance with RoHS 3 (2015/863/EU) standards for safe use in regulated industries
• Corrosion-free performance thanks to nylon plastic construction that eliminates rust and galvanic corrosion

Professional Applications & Engineering Value

Our nylon self-retaining washer delivers exceptional engineering value by solving critical assembly challenges in demanding environments. The nylon plastic construction provides inherent electrical insulation and corrosion resistance, making it ideal for electrical enclosures, automotive components, and outdoor equipment where metal washers would fail. The self-retaining feature significantly reduces assembly time and prevents misalignment in automated production lines or hard-to-reach applications. With its impressive temperature range from -40°F to 180°F, this washer maintains dimensional stability and mechanical properties in both freezing conditions and elevated temperature environments, ensuring reliable performance in HVAC systems, industrial machinery, and transportation equipment where thermal cycling is common.

Specification Summary & Compliance

This self-retaining washer features precision dimensions including 0.564" inner diameter, 0.89" outer diameter, and thickness ranging from 0.022" to 0.042". Manufactured from nylon plastic with Rockwell R120 hardness, it's designed for use with both 3/8" and M10 screw sizes, providing flexibility across measurement systems. The product is fully RoHS 3 (2015/863/EU) compliant and operates reliably across the specified temperature range of -40°F to 180°F, meeting industry standards for environmental safety and performance in demanding applications.