S-91100A347 6.5 mm ID x 17.7 mm OD DIN 9021 Oversized Washers
Oversized 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 load distribution with precise 17.7mm outer diameter and 6.5mm inner diameter to prevent surface damage and maintain joint integrity under Class 8.8 fastener loads
- Enhanced corrosion resistance through zinc-plated steel construction, extending service life in humid or industrial environments
- Reliable dimensional stability with 1.4-1.8mm thickness range ensuring consistent performance and easy installation
- Guaranteed compatibility with M6 Class 8.8 fasteners per DIN 9021 standard, eliminating mismatches in metric assembly systems
- Environmental compliance assurance meeting RoHS 3 and REACH regulations for safe global sourcing and usage
- Optimized for heavy-duty applications providing durable support in machinery, construction, and automotive assemblies
Professional Applications & Engineering Value
This zinc-plated steel flat washer solves critical engineering challenges in industrial applications where vibration, load stress, and environmental factors compromise fastener integrity. The DIN 9021 compliance ensures precise dimensional tolerances for perfect alignment with M6 Class 8.8 fasteners, preventing loosening and distributing clamp load evenly across surfaces. The zinc plating creates a sacrificial barrier against oxidation, making these metric flat washers ideal for outdoor equipment, automotive subassemblies, and machinery exposed to moisture. By maintaining bolt tension and protecting joined materials from galling, these precision washers reduce maintenance frequency and extend equipment lifespan in demanding operational conditions.
Specification Summary & Compliance
Manufactured to DIN 9021 specifications with metric dimensions: 6.5mm ID, 17.7mm OD, and 1.4-1.8mm thickness range. Designed specifically for M6 Class 8.8 fasteners with zinc-plated steel construction. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards for hazardous substance restrictions.
