S-99041A203 0.125" ID Square Washers

Key Features & Benefits at a Glance

• Enhanced Corrosion Resistance: Zinc-plated steel construction provides reliable protection against rust and environmental degradation, extending service life in demanding industrial settings.
• Superior Load Distribution: 2" square design offers a larger surface area to evenly distribute pressure, reducing the risk of material damage and loosening under heavy loads.
• Precision Fit for No. 4 Screws: 0.125" inner diameter ensures a secure and accurate fit, minimizing misalignment and improving assembly efficiency in fastening applications.
• Consistent Thickness for Reliability: 0.054-0.066" thickness range guarantees uniform performance, preventing compression failures and maintaining fastener integrity.
• Durable Material Hardness: Rockwell B40 hardness rating ensures the washer resists deformation and wear, providing long-term stability in high-stress environments.
• Compliance with Global Standards: Meets RoHS 3 and REACH regulations, ensuring safe, environmentally responsible use in international markets and regulated industries.
• Wide Industrial Compatibility: Inch system measurement makes it ideal for machinery, equipment, and structures requiring standardized, heavy-duty fastening components.

Professional Applications & Engineering Value

This 2" square washer is engineered from zinc-plated steel to address common industrial challenges such as corrosion, vibration loosening, and uneven load distribution. Its square shape provides a broader bearing surface compared to round washers, effectively preventing fastener embedment and surface damage in materials like wood, metal, and composites. The Rockwell B40 hardness ensures it maintains structural integrity under repetitive stress, making it suitable for heavy-duty applications in construction, automotive assembly, and machinery manufacturing. With a precise 0.125" ID for No. 4 screws, it facilitates quick, error-free installations, reducing downtime and enhancing the reliability of industrial fastening systems. The corrosion-resistant zinc plating further extends usability in humid or outdoor environments, offering a cost-effective solution for long-term performance.

Specification Summary & Compliance

This square washer adheres to inch system dimensions with an inner diameter of 0.125", thickness between 0.054-0.066", and width of 2", ensuring precise compatibility with No. 4 screws. Manufactured from zinc-plated steel with a Rockwell B40 hardness, it meets industry standards for durability and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for global industrial use.