S-93785A430 4.3 mm ID x 9 mm OD DIN 125 Plastic Washers

Key Features & Benefits at a Glance

• Exceptional high-temperature performance withstands continuous exposure from -20°F to 500°F, ensuring reliable operation in extreme thermal environments
• Superior chemical resistance from PEEK plastic construction prevents degradation when exposed to aggressive industrial chemicals and solvents
• Precision dimensional accuracy with 4.3mm ID and 9mm OD maintains perfect fit and consistent load distribution for M4 fasteners
• Enhanced durability with Rockwell M103 hardness provides excellent wear resistance and long service life in demanding applications
• Regulatory compliance assurance with RoHS 3 and REACH certification eliminates environmental and safety concerns in global markets
• Standardized compatibility through DIN 125 specifications ensures seamless integration with existing metric fastener systems
• Ultra-thin profile optimization at 0.7-0.9mm thickness enables space-constrained applications without compromising performance

Professional Applications & Engineering Value

This PEEK plastic flat washer delivers critical engineering solutions where conventional metal washers fail. The M4 metric sizing combined with DIN 125 precision ensures perfect compatibility in automated assembly systems and precision equipment. The high-temperature capability to 500°F makes it ideal for thermal management applications in electronics, aerospace, and automotive sectors where thermal cycling causes metal fatigue. The chemical-resistant PEEK material prevents corrosion in chemical processing equipment, medical devices, and semiconductor manufacturing where purity and resistance to aggressive media are paramount. The ultra-thin design addresses space limitations in compact assemblies while maintaining uniform clamping force distribution, preventing joint loosening under vibration and thermal expansion conditions.

Specification Summary & Compliance

This flat washer features precision metric dimensions with 4.3mm internal diameter, 9mm outer diameter, and 0.7-0.9mm thickness range, manufactured to DIN 125 standards for dimensional accuracy and performance consistency. The component maintains compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for international industrial applications. Manufactured from high-performance PEEK plastic with Rockwell M103 hardness rating, this washer delivers reliable performance across the specified temperature range from -20°F to 500°F.