S-91116A180 13 mm ID x 37 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 corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
- Precise dimensional accuracy compliant with DIN 9021 standards, ensuring reliable fit with M12 fasteners
- Enhanced load distribution through 37mm outer diameter, reducing surface pressure and preventing material damage
- Consistent mechanical performance with Rockwell B52 hardness, maintaining structural integrity under stress
- Environmental compliance assurance meeting RoHS 3 and REACH regulations for safe, sustainable usage
- Optimized thickness tolerance (2.7-3.3mm) providing uniform spacing and vibration resistance in assemblies
- Broad industrial compatibility as a metric flat washer suitable for machinery, construction, and automotive applications
Professional Applications & Engineering Value
Engineered to address common industrial fastening challenges, these M12 flat washers deliver exceptional performance in demanding environments. The 18-8 stainless steel composition provides inherent corrosion resistance, eliminating premature failure in humid or chemical-exposed settings. With DIN 9021 compliance, these metric washers ensure precise dimensional stability when paired with M12 screws, preventing loosening from vibration and thermal cycling. The optimized 37mm OD distributes clamping forces evenly across surfaces, protecting soft materials while maintaining joint integrity. Ideal for heavy-duty industrial applications including machinery assembly, structural steel connections, and automotive components, these washers offer reliable vibration resistance and long-term durability where fastener reliability is critical.
Specification Summary & Compliance
This flat washer features precise metric dimensions with 13mm inner diameter, 37mm outer diameter, and thickness ranging 2.7-3.3mm. Manufactured to DIN 9021 standards for dimensional accuracy and mechanical properties. The 18-8 stainless steel construction achieves Rockwell B52 hardness for consistent performance. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and restricted substance adherence for global industrial applications.
