S-91122A229 28 mm ID Square Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments and extending service life.
• Exceptional load distribution with a 50mm width, minimizing surface pressure and preventing damage to connected materials.
• High mechanical strength with Rockwell B84 hardness, ensuring reliable performance under heavy loads and vibration.
• Precise compatibility for M22 screw sizes and a 28mm inner diameter, enabling easy installation and secure fastening.
• Enhanced stability due to the square shape, which resists rotation and maintains alignment during assembly.
• Regulatory compliance with RoHS 3 and REACH standards, ensuring safety and environmental responsibility in global supply chains.
• Durable 6.0mm thickness providing long-term reliability and reduced need for replacements in demanding applications.

Professional Applications & Engineering Value

This M22 square washer is engineered to address common industrial challenges such as fastener loosening, material degradation, and assembly inefficiencies. Made from 18-8 stainless steel, it offers excellent resistance to rust and chemicals, making it suitable for outdoor machinery, marine equipment, and chemical processing plants where corrosion resistance is critical. The square design prevents rotation during torque application, ensuring consistent clamping force in heavy-duty applications like structural steelwork, conveyor systems, and automotive assemblies. With a metric sizing of 28mm ID and 50mm width, it provides a larger bearing surface to distribute loads evenly, reducing stress concentrations and prolonging the life of connected components. This washer is a reliable choice for engineers seeking durability, compliance, and performance in industrial washers.

Specification Summary & Compliance

This square washer features precise dimensions with an inner diameter of 28mm, width of 50mm, and thickness of 6.0mm, designed for M22 screw sizes in metric system applications. It complies with industry standards for material quality and is manufactured from 18-8 stainless steel with a hardness of Rockwell B84. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant (as of 01/17/2023, covering 233 SVHC), ensuring adherence to environmental and safety regulations for industrial use.