S-91755A159 0.564" ID x 0.89" OD Self-Retaining Washers

Key Features & Benefits at a Glance

• Secure self-retaining design prevents loosening and maintains proper positioning during assembly and vibration
• Excellent dimensional stability with precise 0.564" ID and 0.89" OD for reliable fit on 3/8" and M10 screws
• Superior chemical and corrosion resistance provided by durable Nylon Plastic material, ideal for harsh industrial environments
• High-impact durability with Rockwell R120 hardness to withstand repeated assembly cycles and mechanical stress
• Broad temperature tolerance from -40°F to 180°F ensures consistent performance in extreme thermal conditions
• Dual-system compatibility supporting both Inch (3/8") and Metric (M10) screw sizes for versatile global applications
• Environmental compliance assurance with RoHS 3 (2015/863/EU) certification for safe, regulated use

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these self-retaining washers provide critical vibration resistance and component security in machinery, automotive assemblies, and electrical enclosures. The Nylon Plastic construction offers inherent electrical insulation and eliminates galvanic corrosion risks when used with dissimilar metals. With a temperature range of -40°F to 180°F, these washers maintain their mechanical properties and dimensional integrity in both freezing outdoor environments and elevated temperature operations. The precision 0.564" ID and 0.89" OD ensure perfect alignment with both 3/8" and M10 screw sizes, reducing installation time while preventing assembly errors in mixed-standard manufacturing environments.

Specification Summary & Compliance

This washer features dimensional precision with ID 0.564", OD 0.89", and thickness 0.052-0.072" specifically engineered for 3/8" and M10 screw applications. Manufactured from Nylon Plastic with Rockwell R120 hardness for consistent performance. The product is fully RoHS 3 (2015/863/EU) compliant and operates effectively across a wide temperature range from -40°F to 180°F while maintaining structural integrity and dimensional stability.