S-90452A126 Washers for Square-Neck Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 Stainless Steel construction, ideal for harsh industrial environments and outdoor applications.
• Enhanced load distribution with a large 1.5" outer diameter, reducing surface pressure and preventing material damage.
• Secure anti-rotation performance from the square hole design, ensuring the washer stays firmly in place during assembly and operation.
• Precise compatibility with 5/8" screws and a 0.65" inside width, providing a reliable fit for standard industrial fastening systems.
• Durable mechanical properties from a thickness of 0.115-0.125", offering consistent performance under heavy loads.
• Environmental and safety compliance with RoHS 3 and REACH regulations, ensuring safe use in regulated industries.
• Broad application versatility in inch-based measurement systems, suitable for a wide range of machinery and structural projects.

Professional Applications & Engineering Value

This square hole washer is engineered to address common industrial challenges such as fastener loosening due to vibration and corrosion-induced failure. The 18-8 Stainless Steel material provides excellent resistance to rust and chemicals, making it ideal for applications in chemical processing, marine equipment, and food machinery where hygiene and durability are critical. The square hole design prevents rotation during installation, ensuring a stable and secure fit for 5/8" screws in heavy-duty assemblies. With its precise dimensions, including a 1.5" OD and 0.65" inside width, this washer delivers reliable performance in construction, automotive, and manufacturing sectors, reducing maintenance needs and extending equipment life.

Specification Summary & Compliance

This washer features standard inch system dimensions with an outer diameter of 1.5", thickness range of 0.115-0.125", and inside width of 0.65", designed for compatibility with 5/8" screws. Manufactured from 18-8 Stainless Steel, it adheres to common industrial standards for dimensional accuracy. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets strict environmental and safety requirements for hazardous substance control.