S-92620A722 1/2"-13 x 2 1/2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional strength and durability with Grade 8 classification, providing a tensile strength of 150,000 psi and Rockwell C33 hardness for reliable performance in high-stress applications.
• Superior corrosion resistance thanks to the zinc yellow-chromate plating, extending the fastener's lifespan in harsh industrial environments.
• Easy installation and removal with an external hex drive and coarse UNC threads, ensuring quick assembly and disassembly with standard tools.
• Precise thread fit with Class 2A tolerance, offering consistent engagement and reducing the risk of cross-threading or loosening under vibration.
• Full threading along the 2 1/2" length allows for maximum adjustability and secure fastening in a wide range of material thicknesses.
• Compliance with industry standards including ASME B18.2.1 and SAE J429, ensuring quality, interchangeability, and reliability in mechanical assemblies.
• Environmentally responsible manufacturing by meeting RoHS 3 and REACH regulations, supporting sustainable procurement practices.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in heavy-duty industrial settings, such as construction machinery, automotive frames, and structural steel connections. The steel material combined with zinc yellow-chromate plating provides robust protection against rust and corrosion, even in outdoor or chemically aggressive environments. Its coarse UNC thread and fully threaded design ensure rapid installation and high clamping force, reducing assembly time and minimizing the risk of joint failure. With a tensile strength of 150,000 psi and compliance with ASME B18.2.1, it delivers consistent performance in applications demanding high load-bearing capacity and vibration resistance, making it a trusted choice for engineers and maintenance teams.

Specification Summary & Compliance

This fastener features a 1/2"-13 UNC coarse thread with Class 2A fit for precise dimensional accuracy. It meets ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring adherence to recognized manufacturing standards. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming its environmental and safety regulatory conformity.