S-91100A120 3.2 mm ID x 9 mm OD DIN 9021 Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
• Precise dimensional accuracy with 3.2mm ID and 9mm OD ensuring perfect fit for M3 screws and uniform load distribution
• Enhanced mechanical durability thanks to Rockwell B56 hardness, maintaining structural integrity under vibration and stress
• Reliable standardization through DIN 9021 compliance, guaranteeing interchangeability and consistent performance
• Optimal thickness control (0.7-0.9mm) providing consistent spacing and secure fastening in assembly applications
• Environmental compliance with RoHS 3 and REACH regulations, ensuring safe usage in regulated industries
• Versatile industrial suitability for machinery, electrical enclosures, and automotive assemblies requiring metric fasteners

Professional Applications & Engineering Value

Engineered for precision industrial fastening, these M3 flat washers address critical challenges in assembly operations. The zinc-plated steel material provides essential corrosion protection where moisture or chemicals are present, while the DIN 9021 standardization ensures dimensional consistency across production runs. The controlled 0.7-0.9mm thickness prevents joint loosening under vibration, and the Rockwell B56 hardness maintains flatness under torque loads. Ideal for electrical panels, machinery frames, and automotive components, these metric flat washers deliver reliable load distribution and prolonged fastener life in demanding applications.

Specification Summary & Compliance

Manufactured to DIN 9021 dimensional standards with precise 3.2mm ID and 9mm OD tolerances. Material specifications include zinc-plated steel construction with Rockwell B56 hardness. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting industrial requirements for hazardous substance restrictions.