S-99041A222 0.531" ID Square Washers

Key Features & Benefits at a Glance

• Enhanced Load Distribution - Square shape provides superior surface contact area compared to round washers, preventing fastener loosening and surface damage under heavy loads
• Superior Corrosion Resistance - Zinc-plated steel construction offers excellent protection against rust and environmental degradation in demanding industrial settings
• Precision Fit for 1/2" Fasteners - 0.531" inner diameter ensures perfect alignment and secure seating on 1/2" screws, reducing installation time and improving assembly accuracy
• Optimal Material Strength - Rockwell B40 hardness rating guarantees consistent performance under pressure without deformation or failure
• Standardized Dimensions - 1" width and 0.097-0.113" thickness range ensure compatibility with existing tooling and consistent performance across applications
• Environmental Compliance Ready - Meets RoHS 3 and REACH standards for safe use in regulated industries and international markets
• Durable Long-Term Performance - Zinc-plated steel maintains integrity through repeated use cycles, reducing replacement frequency and maintenance costs

Professional Applications & Engineering Value

This heavy-duty square washer addresses critical engineering challenges in industrial assembly and construction applications. The zinc-plated steel construction provides essential corrosion protection for outdoor equipment, machinery bases, and structural frameworks exposed to moisture and harsh environments. The square profile design prevents rotation during installation and distributes clamping force more effectively than traditional round washers, making it ideal for 1/2" screw applications in vibrating machinery, heavy equipment assembly, and structural steel connections. The precise 0.531" inner diameter ensures proper centering on fasteners, eliminating misalignment issues that can compromise joint integrity. With Rockwell B40 hardness, these washers maintain dimensional stability under extreme pressure, preventing embedding and maintaining bolt preload in critical connections.

Specification Summary & Compliance

This square washer features inch system dimensions with 1" width, 0.531" inner diameter, and thickness ranging from 0.097" to 0.113" for consistent performance. Manufactured from zinc-plated steel with Rockwell B40 hardness rating, it's specifically engineered for use with 1/2" screw sizes. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety standards for industrial components. These specifications ensure reliable performance in demanding applications while maintaining regulatory compliance for global market acceptance.