S-90483A171 19 mm ID x 34 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 with zinc yellow-chromate plating, ideal for harsh industrial environments
- Enhanced load distribution across M18 fasteners, reducing surface pressure and preventing joint failure
- High hardness rating (Rockwell C38) ensures dimensional stability under heavy loads
- Precision metric sizing (19mm ID, 34mm OD) guarantees consistent fit with standard M18 screws
- International standard compliance (DIN 125, ISO 7089) ensures interchangeability and reliability
- Environmental regulation adherence with full RoHS 3 and REACH compliance for global supply chain integration
- Optimized thickness range (2.7-3.3mm) provides ideal balance between strength and flexibility
Professional Applications & Engineering Value
This M18 flat washer delivers critical engineering solutions through its zinc yellow-chromate plated steel construction, specifically designed to combat galvanic corrosion in electrical and outdoor applications. The DIN 125 and ISO 7089 certification ensures perfect compatibility with metric M18 fasteners in automotive assembly, machinery manufacturing, and structural steelwork. The hardened steel core maintains flatness under extreme vibration, while the yellow-chromate surface treatment provides superior protection against chemical exposure and weathering. Engineers specify these industrial washers for critical bolted connections where consistent clamping force and long-term corrosion resistance are mandatory for operational safety and reduced maintenance cycles.
Specification Summary & Compliance
Manufactured to DIN 125 and ISO 7089 dimensional standards with precise 19mm internal diameter and 34mm outer diameter specifications. The 2.7-3.3mm thickness range maintains tight manufacturing tolerances for consistent performance. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and global market acceptance. The Rockwell C38 hardness rating confirms material integrity meets industrial strength requirements.
