S-91283A436 1 1/2"-6 x 3" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 100,000 PSI ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Rockwell C19 hardness provides superior resistance to wear and deformation, extending the service life of the screw.
• Coarse UNC threading allows for quick and easy installation, saving time in assembly and maintenance tasks.
• Fully threaded design offers maximum grip and uniform load distribution along the entire length for enhanced joint integrity.
• Class 2A thread fit ensures consistent, precise engagement with nuts and tapped holes, minimizing cross-threading and rework.
• External hex drive facilitates straightforward tightening with common tools, improving efficiency in industrial settings.
• Compliance with ASME B18.2.1 and SAE J429 standards guarantees dimensional accuracy and interoperability, ensuring reliable performance in regulated environments.

Professional Applications & Engineering Value

This Grade 5 hex head screw is engineered to address critical challenges in heavy-duty industrial applications, such as machinery assembly, structural frameworks, and automotive systems. The steel material combined with a coarse UNC thread and full threading provides robust resistance to vibration loosening and dynamic loads, common in demanding environments. Its right-hand thread direction and external hex drive simplify installation and removal, reducing labor time and tooling complexity. By meeting stringent standards like ASME B18.2.1, it ensures compatibility and durability, making it ideal for projects requiring high reliability and compliance with industrial specifications. This screw delivers consistent performance, minimizing downtime and maintenance costs in sectors like construction, manufacturing, and equipment repair.

Specification Summary & Compliance

This screw adheres to precise dimensional tolerances, including a Class 2A thread fit for consistent engagement and UNC coarse threading per standard specifications. It conforms to ASME B18.2.1 and SAE J429 manufacturing norms, ensuring reliability in industrial use. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental safety and regulatory requirements in global markets.