S-99041A143 0.375" ID Square Washers

Key Features & Benefits at a Glance

• Enhanced load distribution with a 2" square design that minimizes surface pressure and prevents material damage in heavy-duty applications.
• Superior corrosion resistance thanks to the zinc-plated steel construction, ensuring long-term durability in harsh industrial environments.
• Precise compatibility with 5/16" screws and a 0.375" inner diameter for secure, reliable fastening without slippage.
• Exceptional mechanical strength from Rockwell B40 hardness, providing consistent performance under high stress and vibration.
• Optimized thickness range of 0.125-0.145" for balanced flexibility and stability in various assembly setups.
• Compliance with global standards including RoHS 3 and REACH, ensuring safe, eco-friendly use in regulated industries.
• Dependable inch system sizing for seamless integration with existing machinery and components in North American markets.

Professional Applications & Engineering Value

This zinc-plated steel square washer is engineered to address common industrial challenges like uneven load distribution and fastener loosening. Its 2" width and robust material effectively spread pressure across a larger area, reducing the risk of surface deformation in structural assemblies, machinery, and automotive systems. The Rockwell B40 hardness ensures it withstands repetitive stress and vibration, while the zinc plating offers excellent corrosion resistance in outdoor or humid conditions. Ideal for applications requiring heavy-duty washers with precise inch system dimensions, it provides reliable performance in construction, manufacturing, and equipment maintenance, enhancing safety and longevity.

Specification Summary & Compliance

This square washer features an inner diameter of 0.375" and thickness range of 0.125-0.145", designed for use with 5/16" screws in inch-based systems. Manufactured from zinc-plated steel with a Rockwell B40 hardness, it adheres to industry standards for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety requirements for industrial use.