S-93785A160 0.406" ID x 1" OD Plastic Washers

Key Features & Benefits at a Glance

• Exceptional thermal stability for reliable performance in extreme environments from -50°F to 500°F
• Superior chemical and wear resistance due to high-performance PEEK plastic construction with Rockwell M103 hardness
• Precise dimensional compatibility with 0.406" ID and 1" OD designed specifically for 3/8" screw applications
• Consistent load distribution and vibration resistance with flat washer design in inch measurement system
• Environmental and regulatory compliance with RoHS 3 and REACH standards for global industrial use
• Lightweight non-conductive properties ideal for electrical and corrosive applications where metal washers fail
• Durable beige plastic construction maintains integrity under continuous thermal cycling and mechanical stress

Professional Applications & Engineering Value

This PEEK plastic flat washer delivers critical engineering solutions for demanding industrial environments where temperature extremes and chemical exposure compromise conventional fasteners. The high-temperature rating from -50°F to 500°F ensures reliable performance in automotive, aerospace, and chemical processing equipment where thermal cycling causes metal washers to degrade. The Rockwell M103 hardness provides exceptional resistance to deformation under load, while the precise 0.406" ID and 1" OD dimensions guarantee perfect fitment for 3/8" screw applications. As a non-metallic alternative, it eliminates galvanic corrosion in mixed-material assemblies and provides electrical insulation in sensitive electronic enclosures, making it indispensable for OEMs requiring RoHS 3 and REACH compliant components that maintain dimensional stability across extreme operating conditions.

Specification Summary & Compliance

This inch-system flat washer features precise dimensional specifications with 0.406" inner diameter, 1" outer diameter, and thickness ranging from 0.064" to 0.104". Manufactured from PEEK plastic with Rockwell M103 hardness rating, it maintains mechanical integrity across the full temperature range from -50°F to 500°F. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide. Designed specifically for use with 3/8" screws, this washer provides reliable performance in demanding fastener applications requiring chemical resistance and thermal stability.