S-93475A320 21 mm ID x 37 mm OD DIN 125; ISO 7089 General Purpose Washers
General Purpose Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance from 18-8 stainless steel construction, ideal for humid or chemically aggressive environments
- Precise dimensional fit with 21mm ID and 37mm OD ensures perfect alignment and load distribution for M20 screws
- Consistent thickness (2.7-3.3mm) provides reliable spacing and prevents fastener loosening under vibration
- Dual-standard compliance with both DIN 125 and ISO 7089 guarantees international quality and interchangeability
- Environmental regulation compliance with RoHS 3 and REACH meets strict industrial safety and sustainability requirements
- Excellent durability maintains performance in demanding mechanical and outdoor applications
- Broad industrial compatibility works seamlessly with metric M20 fasteners across various machinery and equipment
Professional Applications & Engineering Value
Engineered for industrial reliability, these M20 flat washers manufactured from 18-8 stainless steel provide critical protection against galvanic corrosion and chemical degradation in harsh operating conditions. The DIN 125 and ISO 7089 certified dimensions (21mm ID × 37mm OD) ensure perfect fit with metric M20 fasteners, distributing clamp load effectively to prevent surface damage and joint failure. The flat washer design solves common engineering challenges like bolt loosening from vibration, uneven bearing surfaces, and material stress concentration. Ideal for industrial machinery, structural assemblies, and outdoor equipment, these washers deliver long-term performance where corrosion resistance and dimensional precision are paramount.
Specification Summary & Compliance
This flat washer features precise metric dimensions: 21mm internal diameter, 37mm outer diameter, and 2.7-3.3mm thickness range. Manufactured to DIN 125 and ISO 7089 standards for dimensional accuracy and quality assurance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and restricted substance adherence for industrial applications worldwide.
