S-93785A930 0.125" ID x 0.375" OD ASME B18.22.1 Plastic Washers

Key Features & Benefits at a Glance

• Exceptional thermal stability for reliable performance in extreme environments ranging from -50°F to 550°F
• Superior chemical resistance from PEEK material, preventing degradation in harsh industrial settings
• Precision dimensional fit with 0.125" ID and 0.375" OD ensuring perfect alignment with No. 4 screws
• Consistent load distribution through flat washer design, reducing stress concentrations in assemblies
• Regulatory compliance confidence with RoHS 3 (2015/863/EU) adherence for global market acceptance
• Standardized reliability meeting ASME B18.22.1 specifications for guaranteed interchangeability
• Non-conductive properties providing electrical insulation in sensitive electronic applications

Professional Applications & Engineering Value

This PEEK plastic flat washer delivers critical engineering solutions where traditional metal washers fail. The high-temperature resistance up to 550°F makes it ideal for aerospace, automotive, and semiconductor equipment experiencing thermal cycling. Its chemical inertness prevents corrosion in chemical processing, oil & gas, and medical devices exposed to aggressive fluids. The precise 0.125" ID x 0.375" OD dimensions for No. 4 screws ensure vibration-resistant fastening in precision instruments and electronic enclosures. The beige color provides visual distinction in complex assemblies, while the flat washer design maintains uniform clamping force in high-stress applications.

Specification Summary & Compliance

Manufactured to ASME B18.22.1 standards with precise dimensional tolerances for inch system applications. The washer features an inner diameter of 0.125", outer diameter of 0.375", and thickness between 0.036-0.045". Compliant with RoHS 3 (2015/863/EU) regulations, ensuring environmental safety and restricted substance compliance. Designed specifically for No. 4 screw size applications with temperature capability from -50°F to 550°F.