S-92620A881 3/4"-16 x 6" 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 industrial applications, reducing the risk of fastener failure.
• Superior corrosion resistance with zinc yellow-chromate plating extends service life in harsh environments, minimizing maintenance and replacement costs.
• High hardness rating of Rockwell C33 provides excellent wear resistance and durability under heavy loads and repetitive use.
• Precise UNF fine threading with Class 2A fit offers secure, vibration-resistant connections for critical assemblies.
• Full threading along the 6" length allows for adjustable engagement and consistent clamping force in varied material thicknesses.
• External hex drive design facilitates easy installation and removal with standard tools, improving assembly efficiency.
• Compliance with ASME B18.2.1 and SAE J429 standards guarantees consistent quality and interoperability in regulated industrial settings.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address common industrial challenges such as joint integrity under dynamic loads and environmental corrosion. The steel material combined with zinc yellow-chromate plating provides a robust barrier against rust and chemical exposure, making it ideal for outdoor machinery, construction equipment, and automotive assemblies. The UNF fine thread design ensures tighter tolerances and better stress distribution compared to coarse threads, reducing the likelihood of loosening in vibrating systems. With a 6" length and fully threaded shank, it offers versatility for thick-section connections in structural frameworks and heavy-duty fastening applications, delivering long-term reliability and reduced downtime.

Specification Summary & Compliance

This fastener features a 3/4"-16 UNF thread size with Class 2A thread fit for precise dimensional accuracy, adhering to ASME B18.2.1 and SAE J429 specifications. It meets industry standards for mechanical properties, including tensile strength and hardness, and is manufactured with zinc yellow-chromate plating for enhanced corrosion protection. Compliant with common regulatory requirements for industrial components, ensuring consistent performance and safety in professional applications.