S-91145A149 0.173" ID x 0.344" OD Insulating Washers

Key Features & Benefits at a Glance

• Exceptional Temperature Resistance - Maintains structural integrity across a wide operating range from -40°F to 180°F, ensuring reliable performance in demanding environments.
• Superior Durability & Hardness - Rockwell R108 hardness provides excellent resistance to wear, deformation, and mechanical stress for long-lasting assemblies.
• Precision Fit for No. 8 Screws - 0.173" ID and 0.205" sleeve OD ensure secure, vibration-resistant fastening with minimal play.
• Corrosion & Chemical Resistance - Nylon 6/6 plastic construction inherently resists moisture, chemicals, and galvanic corrosion.
• Enhanced Electrical Insulation - Non-conductive properties prevent electrical shorts and are ideal for electronic assemblies.
• RoHS 3 Compliance - Meets strict environmental standards (2015/863/EU) for safe use in regulated industries.
• Optimized Load Distribution - 0.344" OD and sleeve design effectively spread bearing pressure, protecting sensitive surfaces.

Professional Applications & Engineering Value

This Nylon 6/6 plastic sleeve washer is engineered to solve critical challenges in industrial and electronic assemblies where electrical insulation, corrosion resistance, and dimensional stability are paramount. Its sleeve design acts as both a bushing and a washer, providing superior alignment and vibration dampening for No. 8 screw applications. The material's low moisture absorption and high Rockwell R108 hardness ensure that the washer retains its shape and mechanical properties even under cyclic loading and extreme temperature fluctuations from -40°F to 180°F. This makes it an ideal choice for electrical enclosures, automotive components, and outdoor equipment, where traditional metal washers would fail due to corrosion or conductivity issues.

Specification Summary & Compliance

This washer features precision inch-system dimensions: 0.173" ID, 0.344" OD, 0.063" thickness, and 0.438" overall height. The sleeve portion measures 0.205" OD and 0.375" height. Manufactured from Nylon 6/6 in an off-white color, it is designed for No. 8 screw size applications. The product is fully RoHS 3 (2015/863/EU) compliant, ensuring it meets the latest environmental regulations for hazardous substance restrictions.