S-97310A111 3.2 mm ID x 9 mm OD DIN 7349 Oversized Washers
Oversized Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc plating, extending service life in demanding industrial environments
- Exceptional load distribution from precise 9mm OD, preventing surface damage and fastener loosening
- Reliable hardness performance with Rockwell B76 rating, maintaining structural integrity under pressure
- Guaranteed dimensional accuracy per DIN 7349 standard, ensuring perfect fit with M3 screws
- Environmental compliance assurance meeting RoHS 3 and REACH regulations for global supply chain compatibility
- Optimized thickness control (0.9-1.1mm) providing consistent spacing and vibration resistance
- Cost-effective protection for assembled components through sacrificial anode properties of zinc coating
Professional Applications & Engineering Value
These M3 flat washers deliver critical engineering solutions where vibration management and corrosion prevention are paramount. The zinc-plated steel construction creates a barrier against moisture and chemical exposure, significantly reducing maintenance frequency in industrial applications such as electrical enclosures, machinery assembly, and automotive components. The precise 3.2mm ID ensures seamless compatibility with M3 screws while the 9mm OD provides optimal surface coverage to distribute clamping forces evenly. Manufactured to DIN 7349 specifications, these metric washers eliminate installation issues and provide reliable performance in high-stress environments where fastener integrity cannot be compromised.
Specification Summary & Compliance
This flat washer features precise dimensions: 3.2mm inner diameter, 9mm outer diameter, and 0.9-1.1mm thickness range, engineered for M3 screw applications. Manufactured according to DIN 7349 standards with Rockwell B76 hardness certification. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, including the latest SVHC updates, ensuring environmental safety and international market acceptance.
