S-91755A132 0.375" ID x 1" OD Self-Retaining Washers

Key Features & Benefits at a Glance

• Self-retaining design ensures secure positioning during assembly, reducing installation time and preventing misalignment in high-vibration environments.
• Nylon plastic construction offers excellent corrosion resistance and electrical insulation, ideal for harsh industrial settings without risk of galvanic corrosion.
• Wide temperature tolerance from -40°F to 180°F maintains structural integrity and performance in extreme thermal conditions.
• Rockwell R120 hardness provides superior durability and resistance to wear, extending service life under repetitive loads.
• Precise 0.375" ID and 1" OD dimensions guarantee a perfect fit for No. 7 screws, ensuring uniform load distribution and reliable fastening.
• RoHS 3 compliance meets stringent environmental regulations, making it safe for use in eco-sensitive applications and global markets.
• Consistent 0.052-0.072" thickness delivers reliable sealing and spacing functions, minimizing the risk of loosening in dynamic assemblies.

Professional Applications & Engineering Value

This nylon plastic self-retaining washer is engineered to address common industrial challenges such as vibration-induced loosening and component corrosion. Its self-retaining feature locks securely onto No. 7 screws, eliminating the need for additional adhesives or lock washers in automated assembly lines. The nylon material provides inherent resistance to chemicals, moisture, and electrical currents, making it ideal for electrical enclosures, automotive systems, and machinery exposed to harsh environments. With a temperature range of -40°F to 180°F, it performs reliably in both freezing and moderately high-heat applications, reducing maintenance downtime and enhancing vibration resistance in critical fastening joints.

Specification Summary & Compliance

This washer adheres to inch system measurements with an inner diameter of 0.375", outer diameter of 1", and thickness range of 0.052-0.072" for precise fitment. Manufactured from Nylon Plastic with a Rockwell R120 hardness rating, it ensures consistent performance under mechanical stress. The product is fully RoHS 3 (2015/863/EU) compliant, confirming its adherence to hazardous substance restrictions and suitability for global industrial use.