S-91755A125 0.115" ID x 0.203" OD Self-Retaining Washers

Key Features & Benefits at a Glance

• Secure Vibration-Resistant Locking: Self-retaining design ensures the washer stays firmly in place on No. 2 and M2 screws, preventing loosening under dynamic loads and reducing maintenance needs.
• Excellent Temperature Resilience: Withstands operating temperatures from -40°F to 180°F, maintaining performance and dimensional stability in both cold and moderately high-temperature industrial environments.
• Durable Nylon Construction: Made from nylon plastic with a Rockwell R120 hardness, offering high resistance to wear, corrosion, and chemical exposure for long service life.
• Dual System Compatibility: Available in both inch and metric sizing (fits No. 2 and M2 screws), providing flexibility for global equipment and fastener standards.
• Precision Fit and Electrical Insulation: Consistent 0.115" ID and 0.203" OD ensures accurate alignment, while nylon material acts as an effective electrical and thermal insulator.
• Environmental and Regulatory Compliance: RoHS 3 (2015/863/EU) Compliant, meeting strict international standards for hazardous substance restrictions in industrial applications.
• Reduced Assembly Time: Self-retaining feature allows for easier handling and installation, speeding up assembly processes and lowering labor costs.

Professional Applications & Engineering Value

This nylon self-retaining washer is engineered to address common challenges in industrial fastening, such as vibration-induced loosening and component misalignment. The nylon plastic material provides inherent resistance to corrosion, chemicals, and electrical conductivity, making it ideal for electrical enclosures, automotive assemblies, and machinery where insulation and durability are critical. Its ability to perform across a broad temperature range (-40°F to 180°F) ensures reliability in varying operational conditions, from outdoor equipment to heated industrial systems. By combining a self-retaining design with precise dimensions for No. 2 and M2 screws, it minimizes the risk of fastener failure, reduces maintenance intervals, and enhances overall assembly integrity in demanding B2B and OEM applications.

Specification Summary & Compliance

This washer features an ID of 0.115" and OD of 0.203" with a thickness range of 0.052-0.072", ensuring precise fit for specified screw sizes. It is manufactured from nylon plastic with a hardness of Rockwell R120 and complies with RoHS 3 (2015/863/EU) regulations, confirming adherence to environmental and safety standards for industrial components. The product supports both inch and metric systems, facilitating use in diverse global applications without compatibility issues.