S-91116A364 6.6 mm ID x 22 mm OD DIN 440-R Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh or humid environments
• Enhanced durability and wear resistance provided by the black-oxide surface coating
• Precise fit and reliable load distribution ensured by the 6.6mm ID and 22mm OD, perfectly sized for M6 screws
• Guaranteed dimensional consistency and interchangeability through compliance with the DIN 440-R standard
• Long-term operational reliability in demanding applications due to the robust stainless steel material
• Safe for use in regulated industries with full compliance to RoHS 3 and REACH environmental directives
• Reduced risk of galvanic corrosion when paired with other stainless steel components

Professional Applications & Engineering Value

This M6 metric flat washer is engineered to solve critical challenges in industrial assembly and maintenance. The core of its value lies in the black-oxide coated 18-8 stainless steel construction, which provides an exceptional barrier against rust and chemical degradation, significantly extending the service life of the fastener assembly in applications exposed to moisture, chemicals, or outdoor weather. Its compliance with the DIN 440-R standard guarantees precise dimensions and consistent performance, preventing loosening under vibration and ensuring even pressure distribution to protect sensitive surfaces from damage. This makes it an indispensable component in machinery, automotive subsystems, electrical enclosures, and structural frameworks where corrosion resistance and reliable, long-term fastening are non-negotiable for operational safety and reduced maintenance cycles.

Specification Summary & Compliance

This washer conforms to the dimensional and tolerance specifications of the DIN 440-R standard. Key specifications include an Inside Diameter (ID) of 6.6 mm, an Outside Diameter (OD) of 22 mm, and a Thickness ranging from 1.7 to 2.3 mm, designed for use with M6 screw sizes. The product is manufactured from 18-8 Stainless Steel with a Black-Oxide finish. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for use in various industrial and consumer applications.