S-93785A803 0.531" ID x 1.375" OD ASME B18.21.1 Plastic Washers

Key Features & Benefits at a Glance

• Exceptional thermal stability with a wide operating range from -20°F to 500°F, ideal for high-temperature industrial environments
• Enhanced durability and wear resistance due to 30% carbon filler material and Rockwell M103 hardness for long-lasting performance
• Reliable dimensional precision with 0.531" ID and 1.375" OD, ensuring perfect fit for 1/2" screws in critical assemblies
• Superior chemical and corrosion resistance from carbon-filled PEEK plastic, reducing maintenance in harsh conditions
• Lightweight yet robust construction offering strength comparable to metals without added weight, easing installation
• Compliance with industry standards including ASME B18.21.1, ensuring consistent quality and interchangeability
• Eco-friendly and safe with RoHS 3 and REACH compliance, meeting global regulatory requirements for hazardous substances

Professional Applications & Engineering Value

This carbon-filled PEEK plastic flat washer is engineered to address common industrial challenges, such as thermal expansion, chemical exposure, and mechanical stress in demanding applications. The 30% carbon filler enhances structural integrity and reduces deformation under load, making it ideal for high-temperature environments like automotive, aerospace, and chemical processing equipment. Its black color and flat design provide consistent performance in assemblies requiring precise load distribution and electrical insulation. By withstanding extreme temperatures from -20°F to 500°F, this washer minimizes downtime and maintenance costs, ensuring reliable operation in heavy-duty industrial washers and precision machinery. The ASME B18.21.1 compliance guarantees dimensional accuracy, facilitating seamless integration with 1/2" screw fasteners for optimized assembly efficiency.

Specification Summary & Compliance

This washer features precise dimensions with an inner diameter of 0.531", outer diameter of 1.375", and thickness ranging from 0.064" to 0.104", designed for use with 1/2" screw size in inch system measurements. It meets ASME B18.21.1 specifications for flat washers, ensuring consistent thread engagement and load distribution. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards confirms it is free from hazardous substances, supporting safe and sustainable industrial applications.