S-92620A152 1/2"-13 x 9 1/2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional Tensile Strength: With a 150,000 psi tensile strength and Rockwell C33 hardness, this Grade 8 screw withstands extreme loads and high-stress applications, reducing the risk of fastener failure.
• Superior Corrosion Resistance: The zinc yellow-chromate plating provides a durable barrier against rust and environmental degradation, extending the service life in harsh industrial settings.
• Precision Thread Fit: Class 3A thread fit ensures tight, reliable engagement with mating parts, minimizing loosening and maintaining joint integrity under vibration.
• Heavy-Duty Construction: Made from high-strength steel and featuring a 3/4" hex head for high torque application, it delivers reliable performance in demanding mechanical assemblies.
• Optimized for High-Torque Applications: The external hex drive and robust head design allow for secure tightening with standard tools, facilitating efficient installation and maintenance.
• Regulatory Compliance: Meets ASME B18.2.1, SAE J429, RoHS 3, and REACH standards, ensuring product safety, environmental responsibility, and compatibility with industry specifications.
• Versatile Thread Design: The 1/2"-13 UNC coarse thread and partial threading provide strong holding power and ease of alignment in a variety of materials and assembly conditions.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in heavy machinery, structural frameworks, and industrial equipment where high tensile strength and vibration resistance are paramount. The zinc yellow-chromate plating offers enhanced corrosion protection, making it suitable for outdoor or corrosive environments, while the Class 3A thread fit and UNC coarse thread ensure secure fastening and reduced cross-threading risks. Its partially threaded design allows for precise clamp load distribution, ideal for applications requiring unthreaded shank sections to bear shear loads. By complying with ASME B18.2.1 and other standards, it provides reliability in construction, automotive, and manufacturing sectors, minimizing downtime and maintenance costs.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including Class 3A thread fit for superior tolerance and UNC coarse threading (1/2"-13) as per ASME specifications. It is manufactured in compliance with ASME B18.2.1 and SAE J429 for Grade 8 requirements, ensuring consistent performance. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its environmental and safety adherence for global industrial use.