S-91116A410 13 mm ID x 37 mm OD DIN 9021 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 Black-Oxide coated 18-8 stainless steel, ideal for harsh industrial environments
- Enhanced load distribution due to 37mm outer diameter, reducing surface pressure and preventing material damage
- Excellent vibration resistance to maintain joint integrity in high-stress applications
- High durability with Rockwell B68 hardness, ensuring long-term performance under heavy loads
- Precise fit for M12 screws with 13mm inner diameter, providing secure fastening and ease of installation
- Compliance with DIN 9021 standards for consistent quality and reliable dimensional accuracy
- Environmental and safety compliance with RoHS 3 and REACH, meeting strict regulatory requirements
Professional Applications & Engineering Value
This M12 flat washer is engineered to address common industrial challenges such as corrosion, vibration loosening, and uneven load distribution. Constructed from Black-Oxide 18-8 stainless steel, it offers exceptional resistance to rust and chemicals, making it suitable for outdoor, marine, and chemical processing applications. The DIN 9021 specification ensures precise dimensions and reliable performance in metric assemblies, while the flat design with a 37mm OD effectively spreads clamping force to prevent surface damage and bolt fatigue. Ideal for machinery, automotive, and construction uses, this washer enhances joint stability and extends equipment lifespan, reducing maintenance costs and downtime in demanding industrial washers scenarios.
Specification Summary & Compliance
This washer adheres to DIN 9021 standards for dimensional accuracy, with an inner diameter of 13mm, outer diameter of 37mm, and thickness ranging from 2.7–3.3mm. It is manufactured from 18-8 stainless steel with a Black-Oxide surface finish and hardness of Rockwell B68. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial applications.
