S-92865A489 3/4"-16 x 5 1/2" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 120,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure.
• Superior corrosion resistance with zinc plating, extending service life in harsh industrial environments.
• High hardness rating (Rockwell C25) provides excellent wear resistance and durability under heavy loads.
• Precise Class 2A thread fit guarantees smooth installation and secure fastening, minimizing assembly issues.
• Full threading along the entire 5 1/2" length offers maximum grip and adjustability in various material thicknesses.
• External hex drive design allows for high-torque application with standard tools, speeding up installation.
• Compliance with ASME B18.2.1 and SAE J429 standards ensures consistent quality and interchangeability in professional settings.

Professional Applications & Engineering Value

This Grade 5 hex head screw is engineered for heavy-duty industrial applications where reliability is critical. The fine UNF thread (3/4"-16) provides superior resistance to vibration loosening compared to coarse threads, making it ideal for machinery, structural assemblies, and automotive components. The zinc-plated steel construction combats corrosion in outdoor or high-moisture environments, while the external hex drive facilitates quick, high-torque tightening with common tools. Its fully threaded design ensures maximum holding power across joint variations, solving common issues of slippage and insufficient engagement in demanding fastening solutions.

Specification Summary & Compliance

This screw features a 3/4"-16 UNF fine thread with Class 2A fit for precise tolerance, a length of 5 1/2", and is manufactured from Grade 5 steel. It complies with ASME B18.2.1 and SAE J429 specifications, and meets RoHS 3 (2015/863/EU) environmental standards, ensuring both performance and regulatory adherence for industrial use.