S-91268A832 5/8"-11 x 7" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 150,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Grade 8 steel construction with Rockwell C33 hardness provides superior durability and resistance to wear, extending service life in demanding environments.
• Partial threading design offers optimal grip and clamping force, minimizing the need for additional washers and simplifying installation.
• Coarse UNC threads enable quick assembly and disassembly, saving time in maintenance and repair operations.
• External hex drive allows for easy tightening with standard tools, enhancing efficiency in industrial settings.
• Compliance with ASME B18.2.1 and SAE J429 standards guarantees consistent quality and interoperability, ensuring safe and reliable fastening.
• RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence, making them suitable for global supply chains.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in heavy-duty industrial applications, such as machinery assembly, construction, and automotive systems. Its high-strength steel material and Rockwell C33 hardness provide exceptional resistance to vibration and shock, preventing loosening under dynamic loads. The 5/8"-11 UNC coarse thread ensures secure fastening in materials prone to stripping, while the partial threading concentrates stress effectively, reducing the risk of fatigue failure. Ideal for use in structural frameworks and equipment mounts, this screw delivers reliable performance where tensile strength and durability are paramount, supported by compliance with ASME B18.2.1 standards for consistent engineering quality.

Specification Summary & Compliance

This fastener features a Thread Fit of Class 2A for precise dimensional accuracy, with a thread size of 5/8"-11 UNC and coarse spacing to meet common industrial requirements. It adheres to ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring reliable performance in high-strength applications. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for environmental and health standards in various markets.