S-95225A335 10.5 mm ID x 21 mm OD DIN 125 Plastic Washers

Key Features & Benefits at a Glance

• Exceptional Electrical and Thermal Insulation - Hard fiber construction provides reliable non-conductive properties and thermal resistance for safer operation in electrical and high-temperature environments
• Superior Surface Protection - Rockwell R50 hardness ensures excellent resistance to abrasion and deformation, protecting mating surfaces from damage and extending component lifespan
• Precise M10 Compatibility - 10.5mm internal diameter offers perfect fit for M10 screws, ensuring secure fastening without play or misalignment
• High-Temperature Performance - Withstands temperatures up to 230°F (110°C), maintaining structural integrity in demanding industrial applications
• DIN 125 Standard Compliance - Manufactured to exact DIN 125 specifications, guaranteeing dimensional accuracy and interchangeability in European machinery and equipment
• Environmental Regulation Compliance - RoHS 3 and REACH compliant, ensuring safe use in regulated industries and international markets
• Optimal Load Distribution - 21mm outer diameter provides wide surface coverage, effectively distributing clamping force and preventing surface damage

Professional Applications & Engineering Value

These M10 metric hard fiber flat washers deliver critical engineering solutions where electrical insulation, thermal resistance, and surface protection are paramount. The hard fiber material with Rockwell R50 hardness prevents galvanic corrosion between dissimilar metals while offering excellent dielectric properties for electrical applications. The black fiber construction maintains dimensional stability under varying thermal conditions, making these DIN 125 washers ideal for automotive assemblies, electrical enclosures, and machinery where temperature fluctuations occur. Their precise 10.5mm ID and 21mm OD dimensions ensure perfect alignment with M10 fasteners, preventing loosening from vibration while protecting expensive components from surface damage. These industrial washers solve common engineering challenges by combining electrical safety with mechanical reliability in demanding environments.

Specification Summary & Compliance

This metric hard fiber washer features precise dimensions of 10.5mm internal diameter, 21mm outer diameter, and 1.8-2.2mm thickness range, engineered specifically for M10 screw applications. Manufactured in compliance with DIN 125 standards for dimensional accuracy and performance consistency. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) compliance for chemical safety. With a maximum operating temperature of 230°F and Rockwell R50 hardness rating, these washers deliver reliable performance across various industrial applications while maintaining regulatory compliance for global market acceptance.