S-90763A120 5/8"-11 ASTM A563 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional torque resistance thanks to the extra wide hex profile, preventing rounding during high-tension applications
• Superior corrosion protection from the black-oxide steel finish, extending service life in demanding industrial environments
• High-strength performance with ASTM Grade DH certification, ensuring reliable fastening under heavy loads
• Easy installation and compatibility with the coarse 5/8"-11 UNC thread and Class 2B fit, facilitating quick assembly with standard tools
• Enhanced durability from ASTM A563 compliance, guaranteeing material quality and structural integrity
• Secure external hex drive design for straightforward wrenching and reduced slippage risk
• Environmental and safety compliance with RoHS 3 and REACH standards, making them suitable for regulated industries

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this 5/8"-11 UNC hex nut addresses critical challenges in construction, machinery, and structural assemblies where vibration and high loads are common. The black-oxide steel material provides a robust barrier against rust and corrosion, reducing maintenance needs in harsh conditions. Its extra wide profile and coarse thread design enhance grip and torque distribution, minimizing the risk of stripping and ensuring long-term joint integrity. Ideal for use with external hex drive tools, it streamlines installation in tight spaces, supporting efficient operations in automotive, manufacturing, and infrastructure projects that demand high-strength fasteners with reliable performance.

Specification Summary & Compliance

This hex nut features precise Class 2B thread fit and adheres to UNC thread standards with a right-hand direction for consistent engagement. Manufactured under ASTM A563 specifications, it meets ASTM Grade DH strength requirements, ensuring dimensional accuracy and load-bearing capacity. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in environments with strict environmental and health standards.