S-99041A103 0.312" ID Square Washers

Key Features & Benefits at a Glance

• Enhanced Load Distribution - Square shape provides superior surface contact and prevents sinking in soft materials
• Exceptional Corrosion Resistance - Zinc-plated steel construction protects against rust and environmental degradation
• Optimized for 1/4" Fastener Systems - Precision 0.312" inner diameter ensures perfect fit and secure fastening
• Heavy-Duty Performance - Rockwell B40 hardness rating guarantees durability under high-stress conditions
• Superior Stability - 0.75" width creates a broad bearing surface for enhanced structural integrity
• Consistent Thickness Control - 0.110-0.130" thickness range ensures reliable performance across applications
• Environmental Compliance Ready - Meets RoHS 3 and REACH standards for global manufacturing requirements

Professional Applications & Engineering Value

This zinc-plated steel square washer delivers critical engineering advantages in demanding industrial environments. The square configuration provides maximum surface area contact, effectively distributing load forces and preventing fastener pull-through in structural assemblies, wood framing, and machinery bases. The Rockwell B40 hardness ensures the washer maintains its form under heavy clamping pressures, while the zinc plating offers reliable corrosion resistance in humid or outdoor applications. Engineered specifically for 1/4" screw systems with precise 0.312" ID, this heavy-duty component eliminates play and vibration issues in automotive, construction, and manufacturing equipment where square washers are preferred for their anti-rotation properties and enhanced bearing capabilities.

Specification Summary & Compliance

This inch-system square washer features precise dimensional specifications including 0.312" inner diameter, 0.75" width, and controlled thickness between 0.110-0.130". Manufactured from zinc-plated steel with Rockwell B40 hardness, the component ensures consistent performance in heavy-duty applications. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, meeting current regulatory requirements for hazardous substance restrictions and chemical safety protocols in industrial manufacturing and international trade.