S-91116A360 6.4 mm ID x 18 mm OD DIN 9021 Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide coated 18-8 stainless steel, ideal for harsh industrial environments and extending service life.
• Enhanced load distribution due to precise DIN 9021 flat design, reducing surface pressure and preventing fastener loosening in M6 screw assemblies.
• Durable mechanical performance with Rockwell B68 hardness, ensuring reliable strength and resistance to deformation under heavy-duty conditions.
• Accurate dimensional fit with 6.4mm ID and 18mm OD, providing secure seating and alignment for consistent metric fastener applications.
• Regulatory compliance assurance meeting RoHS 3 and REACH standards, supporting safe and sustainable use in global manufacturing sectors.
• Versatile thickness range of 1.4-1.8mm, offering flexibility for various spacing and tension requirements in engineering designs.

Professional Applications & Engineering Value

This M6 flat washer is engineered to address common industrial challenges such as galvanic corrosion, vibration-induced failure, and assembly misalignment. Constructed from Black-Oxide 18-8 stainless steel, it provides a protective barrier against moisture, chemicals, and abrasion, making it suitable for heavy-duty applications in automotive, machinery, and outdoor equipment. The DIN 9021 standard ensures precise dimensions and consistent performance, while the metric system compatibility simplifies integration into global projects. By offering reliable corrosion resistance and mechanical stability, this washer minimizes maintenance needs and enhances the longevity of industrial fastening systems, delivering cost-effective solutions for engineers and procurement specialists.

Specification Summary & Compliance

This flat washer adheres to DIN 9021 specifications, with an inner diameter of 6.4mm, outer diameter of 18mm, and thickness ranging from 1.4-1.8mm. It is manufactured from 18-8 stainless steel with a Black-Oxide surface finish and hardness of Rockwell B68. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial use.