S-91116A150 6.4 mm ID x 18 mm OD DIN 9021 Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in humid or chemically aggressive environments.
• Precise dimensional fit with 6.4mm inner diameter and 18mm outer diameter, providing optimal load distribution and preventing fastener loosening under vibration.
• Enhanced mechanical durability from Rockwell B52 hardness, offering excellent resistance to deformation under high clamping pressures.
• Guaranteed interchangeability through strict adherence to DIN 9021 standards, ensuring consistent performance in metric assembly systems.
• Environmental compliance assurance with RoHS 3 and REACH regulations, making them suitable for regulated industries and export markets.
• Broad M6 screw compatibility for simplified inventory management and reliable performance in diverse industrial applications.
• Optimized thickness range (1.4-1.8mm) providing ideal balance between spacing requirements and structural integrity.

Professional Applications & Engineering Value

This M6 flat washer delivers critical engineering solutions where corrosion resistance and dimensional precision are paramount. Manufactured from 18-8 stainless steel, it effectively prevents galvanic corrosion and maintains integrity in marine, chemical processing, and food equipment applications. The DIN 9021 compliance ensures perfect compatibility with metric fastening systems, while the controlled thickness variation prevents joint relaxation in vibrating machinery. The Rockwell B52 hardness provides optimal resistance to embedding in soft materials, making these precision washers ideal for maintaining bolt preload in structural assemblies, automotive subsystems, and industrial machinery where heavy-duty performance is required.

Specification Summary & Compliance

This flat washer maintains dimensional accuracy per DIN 9021 standards with 6.4mm inner diameter, 18mm outer diameter, and 1.4-1.8mm thickness range. Manufacturing specifications include Rockwell B52 hardness testing for consistent mechanical properties. The product fully complies with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations regarding chemical safety, making it suitable for global industrial applications with stringent environmental requirements.