S-93785A170 0.469" ID x 1.25" OD Plastic Washers

Key Features & Benefits at a Glance

• Exceptional thermal stability maintains structural integrity across extreme temperatures from -50°F to 500°F, preventing deformation in demanding environments
• Superior chemical resistance ensures long-lasting performance when exposed to aggressive industrial chemicals and solvents
• High hardness rating (Rockwell M103) provides excellent wear resistance and dimensional stability under heavy loads
• Precision dimensional fit with 0.469" ID specifically engineered for 7/16" screw sizes ensures secure fastening and proper load distribution
• Regulatory compliance with RoHS 3 and REACH standards guarantees environmental safety and meets international industrial requirements
• Lightweight PEEK construction offers corrosion-free performance while reducing overall assembly weight compared to metal alternatives
• Optimized load distribution with 1.25" OD design spreads pressure evenly to prevent surface damage and maintain joint integrity

Professional Applications & Engineering Value

This PEEK plastic flat washer delivers critical engineering solutions for industries where temperature extremes and chemical exposure compromise conventional components. The high-temperature resistance (500°F maximum) makes it ideal for aerospace, automotive, and chemical processing equipment where thermal cycling would degrade standard polymers. Its chemical-resistant properties prevent swelling and degradation when exposed to hydrocarbons, acids, and steam, ensuring reliable performance in petrochemical and semiconductor manufacturing. The dimensional stability and Rockwell M103 hardness provide consistent clamping force in vibration-prone assemblies, while the precise 0.469" ID for 7/16" screw size ensures perfect fitment in inch-system applications. These flat washers eliminate galvanic corrosion concerns in mixed-material assemblies and offer electrical insulation properties unavailable in metal counterparts.

Specification Summary & Compliance

Manufactured to precise inch system dimensions with 1.25" OD and 0.469" ID specifically designed for 7/16" screw applications. The washer features standard flat washer geometry with thickness tolerance of 0.064-0.104" for consistent performance. Material compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to international environmental and safety standards. The PEEK material maintains mechanical properties across the full operational temperature range of -50°F to 500°F, with hardness certified at Rockwell M103 for quality assurance.