S-90483A106 21.1 mm ID x 37 mm OD DIN 125 General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc yellow-chromate plating for extended service life in harsh industrial environments
• Exceptional load distribution through precise 37mm outer diameter design, preventing surface damage and joint loosening
• Perfect M20 screw compatibility with 21.1mm inner diameter ensuring secure fit and vibration resistance
• Consistent thickness control (2.9-3.0mm) for uniform pressure distribution and reliable sealing performance
• Enhanced mechanical strength with Rockwell C15 hardness rating, maintaining shape under heavy loads
• Guaranteed dimensional accuracy through DIN 125 certification, ensuring interchangeability and assembly efficiency
• Metric system compliance for seamless integration with international machinery and equipment standards

Professional Applications & Engineering Value

This M20 flat washer delivers critical engineering solutions for industrial assembly challenges. The zinc yellow-chromate plated steel construction provides exceptional corrosion resistance in manufacturing environments exposed to moisture, chemicals, and outdoor elements. With precise metric dimensions (21.1mm ID × 37mm OD) and controlled thickness, it effectively distributes clamping force across M20 fastener connections, preventing surface indentation and maintaining joint integrity in heavy-duty applications. The Rockwell C15 hardness ensures the washer maintains its structural integrity under sustained pressure, while DIN 125 certification guarantees dimensional consistency for automated assembly processes and maintenance operations across automotive, machinery, and structural steel applications.

Specification Summary & Compliance

This flat washer features precision metric dimensions with 21.1mm inner diameter, 37mm outer diameter, and controlled thickness of 2.9-3.0mm. Manufactured from zinc yellow-chromate plated steel with Rockwell C15 hardness rating, the product complies with DIN 125 standards for dimensional accuracy and quality assurance. The washer meets international metric system requirements and demonstrates compliance with industrial specifications for corrosion-resistant fastening components suitable for professional applications.