S-93785A130 0.125" ID x 0.313" OD ASME B18.21.1 Plastic Washers

Key Features & Benefits at a Glance

• Exceptional high-temperature performance for reliable operation in environments ranging from -50°F to 500°F, preventing material degradation under thermal stress.
• Superior chemical resistance inherent to PEEK plastic, ensuring long-term integrity when exposed to harsh industrial chemicals and solvents.
• Excellent dimensional stability and hardness (Rockwell M103) to maintain precise load distribution and prevent deformation under pressure.
• Reliable electrical insulation properties for safe use in electrical assemblies, reducing the risk of short circuits.
• Precision-engineered fit with a 0.125" ID and 0.313" OD, designed specifically for No. 4 screws to ensure secure fastening and vibration resistance.
• Full regulatory compliance with RoHS 3 and REACH, making them suitable for global markets and sensitive applications.
• Manufactured to ASME B18.21.1 specifications, guaranteeing consistent quality, interchangeability, and performance in demanding mechanical assemblies.

Professional Applications & Engineering Value

This PEEK plastic flat washer is engineered to solve critical challenges in high-temperature and chemically aggressive environments. Its PEEK material provides an optimal combination of thermal stability, mechanical strength, and resistance to a wide range of chemicals, preventing common failures like corrosion, creep, and loss of clamping force. The precise 0.125" ID and 0.313" OD dimensions ensure a perfect fit for No. 4 screws, maintaining alignment and load distribution in assemblies subject to vibration and thermal cycling. Ideal for aerospace, automotive, and semiconductor manufacturing, this washer delivers long-term reliability where metal components would fail, offering excellent electrical insulation and compliance with stringent industry standards.

Specification Summary & Compliance

This flat washer features an Inside Diameter (ID) of 0.125", Outside Diameter (OD) of 0.313", and a Thickness range of 0.025" to 0.040". It is manufactured in accordance with the ASME B18.21.1 standard, ensuring dimensional precision and performance consistency. The component is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally conscious and regulated industries.