S-98688A159 21 mm ID x 34 mm OD DIN 433 General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with zinc plating that extends service life in harsh industrial environments
• Exceptional load distribution with precise 21mm ID and 34mm OD dimensions to prevent surface damage
• Consistent performance maintained through controlled 2.7-3.3mm thickness variation
• Enhanced durability from Rockwell C38 hardness rating for reliable performance under heavy loads
• Guaranteed compatibility with M20 fasteners and DIN 433 standard compliance for seamless integration
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for global supply chain requirements
• Reduced maintenance costs through long-lasting zinc plated steel construction

Professional Applications & Engineering Value

This M20 zinc plated steel flat washer delivers critical engineering solutions for industrial applications where corrosion resistance and load distribution are paramount. The zinc plated steel construction provides an effective barrier against environmental degradation, significantly extending component life in manufacturing equipment, structural assemblies, and machinery maintenance. Engineered to DIN 433 standards, these metric washers ensure precise fit with M20 fasteners while the controlled thickness variation (2.7-3.3mm) maintains consistent clamping force distribution. The Rockwell C38 hardness rating ensures the washer maintains its structural integrity under vibration and heavy loading conditions, preventing premature failure in demanding applications such as automotive assemblies, construction equipment, and industrial machinery where reliability is non-negotiable.

Specification Summary & Compliance

This flat washer features precise dimensional specifications with 21mm inner diameter, 34mm outer diameter, and thickness range of 2.7-3.3mm. Manufactured in compliance with DIN 433 standards for metric washers and designed specifically for M20 screw sizes. The product meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) regulations (updated 06/14/2023, 235 SVHC), ensuring environmental responsibility and global market acceptance for industrial applications.