S-99041A215 0.285" ID Square Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
• Exceptional load distribution due to 1.5" square design, preventing surface damage and maintaining joint integrity
• Precision fit for 1/4" screws with 0.285" ID, ensuring secure fastening and reducing installation errors
• Consistent thickness control (0.054-0.066") for uniform pressure application and reliable performance under vibration
• Enhanced mechanical strength with Rockwell B40 hardness, resisting deformation under heavy loads
• Full regulatory compliance with RoHS 3 and REACH standards, ensuring safe use in global industrial applications
• Optimized for inch-system assemblies, providing seamless compatibility with North American machinery and equipment

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this square washer delivers critical performance advantages where standard washers fail. The zinc-plated steel construction creates a sacrificial barrier against oxidation, solving corrosion-related failures in outdoor construction, agricultural equipment, and marine hardware. Its square geometry provides 28% more surface contact than round washers, distributing clamp load effectively to prevent material embedment in wood and composite assemblies. The Rockwell B40 hardness maintains dimensional stability under extreme vibration, making it ideal for machinery bases, structural steel connections, and automotive subframes. Precision-manufactured to inch system standards with consistent 0.285" ID, it eliminates play with 1/4" screws while the controlled thickness range ensures predictable compression behavior in torque-critical applications.

Specification Summary & Compliance

This square washer features standard inch dimensions with 1.5" width, 0.285" inner diameter, and controlled thickness between 0.054-0.066". Manufactured from zinc-plated steel with Rockwell B40 hardness rating, it's engineered for use with 1/4" screws in industrial applications. The product fully complies with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations regarding SVHC (Substances of Very High Concern) as of June 14, 2023, ensuring environmental responsibility and workplace safety.