S-91755A317 0.209" ID x 0.335" OD Self-Retaining Washers

Key Features & Benefits at a Glance

• Secure self-retaining design ensures consistent positioning and prevents loosening under vibration, reducing assembly time and maintenance needs.
• Excellent chemical and corrosion resistance from Nylon Plastic material, ideal for harsh environments where metal washers would degrade.
• Wide operating temperature range from -40°F to 180°F maintains performance and dimensional stability in both extreme cold and moderate heat.
• High Rockwell R120 hardness provides superior durability and resistance to wear, extending the service life of your assemblies.
• Dual-standard compatibility fits both No. 10 (inch) and M5 (metric) screw sizes, offering flexibility for global projects and reducing inventory complexity.
• RoHS 3 compliance ensures the washer meets stringent environmental regulations, making it suitable for use in regulated industries and electronic applications.
• Precise dimensional control with consistent ID, OD, and thickness ensures reliable performance and easy installation in tight-tolerance applications.

Professional Applications & Engineering Value

This Nylon Plastic Self-Retaining Washer is engineered to solve common industrial challenges such as component misalignment and fastener loosening due to vibration. Its self-retaining feature locks securely onto No. 10 and M5 screws, providing a stable, non-conductive, and lightweight alternative to metal washers. The off-white nylon construction offers excellent electrical insulation and resistance to many chemicals, making it ideal for electrical enclosures, automotive assemblies, and consumer electronics. With a wide temperature range from -40°F to 180°F, it performs reliably in diverse environments, from freezing outdoor equipment to heated machinery, ensuring long-term durability and reducing the need for frequent replacements.

Specification Summary & Compliance

This washer features an ID of 0.209", OD of 0.335", and thickness of 0.104-0.116", designed for precise fit with No. 10 and M5 screw sizes. Manufactured from Nylon Plastic with a Rockwell R120 hardness, it adheres to standard dimensional tolerances for reliable performance. The product is RoHS 3 (2015/863/EU) Compliant, ensuring it meets environmental safety standards for restricted substances, and is suitable for use in various industrial applications requiring consistent quality and regulatory adherence.