S-95211A220 17 mm ID x 50 mm OD DIN 9021 Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from Passivated 316 Stainless Steel construction, ideal for harsh industrial environments and outdoor applications
• Exceptional load distribution with a large 50mm outer diameter, preventing surface damage and joint loosening under high stress
• Precise fit and secure fastening ensured by the 17mm inner diameter, perfectly matching M16 screw sizes for reliable assemblies
• Enhanced durability and deformation resistance provided by Rockwell B75 hardness, maintaining performance in heavy-duty applications
• Guaranteed dimensional accuracy and interchangeability through compliance with the stringent DIN 9021 standard
• Long-term operational reliability with consistent 2.7-3.3mm thickness for uniform pressure distribution and vibration resistance
• Environmentally safe and sustainable use with full RoHS 3 and REACH compliance, meeting global regulatory requirements

Professional Applications & Engineering Value

This M16 flat washer delivers critical engineering value in demanding applications where failure is not an option. Manufactured from Passivated 316 Stainless Steel, it provides exceptional resistance to corrosive chemicals, saltwater, and extreme temperatures, solving common failure points in chemical processing, marine, and food industry equipment. The DIN 9021 specification ensures precise dimensional tolerances and consistent performance in heavy-duty industrial machinery, construction assemblies, and transportation infrastructure. The large bearing surface area effectively distributes clamping force, preventing bolt head embedding and surface damage on soft materials, while the passivated surface finish enhances corrosion protection without compromising the material's inherent strength. This makes it an ideal choice for permanent installations and critical structural connections where maintenance access is limited.

Specification Summary & Compliance

This metric flat washer features precise dimensions with 17mm inner diameter, 50mm outer diameter, and thickness ranging from 2.7-3.3mm, engineered for M16 screw sizes. Manufactured to DIN 9021 standards for dimensional accuracy and performance reliability. The Passivated 316 Stainless Steel construction provides Rockwell B75 hardness for mechanical durability. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures safe usage across global markets.