S-92620A154 3/4"-10 x 14" 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, this screw provides reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior Corrosion Resistance – The zinc yellow-chromate plating offers enhanced protection against rust and environmental degradation, extending service life in harsh conditions.
• High Hardness & Durability – Rockwell C33 hardness ensures the screw maintains its integrity under heavy loads and repeated use, minimizing wear and deformation.
• Precision Thread Fit – Class 3A thread fit guarantees tight, secure connections with reduced vibration loosening, ideal for machinery and structural assemblies.
• Coarse Thread Advantage – UNC coarse threads allow for quicker installation and better performance in materials prone to debris or galling, saving time and labor.
• Partially Threaded Design – Provides a strong, unthreaded shank section for improved shear strength and alignment in bolted joints.
• External Hex Drive – Enables easy installation and removal with standard tools, facilitating efficient maintenance and assembly processes.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in heavy-duty industrial environments. The steel construction combined with zinc yellow-chromate plating delivers robust corrosion resistance, making it suitable for outdoor machinery, construction equipment, and manufacturing setups exposed to moisture or chemicals. The 3/4"-10 UNC coarse thread and Class 3A thread fit ensure secure fastening in high-vibration applications, such as structural frameworks and automotive assemblies, where loosening can lead to operational failures. Its partially threaded design enhances load distribution, reducing stress concentrations and improving joint integrity. By meeting ASME B18.2.1 specifications, this fastener guarantees dimensional accuracy and reliability, supporting engineers in achieving consistent, safe, and efficient bolted connections across various sectors.

Specification Summary & Compliance

This hex head screw adheres to precise dimensional standards, including Class 3A thread fit for tight tolerances and UNC coarse threading with a 3/4"-10 size. It is manufactured in compliance with ASME B18.2.1 and SAE J429 specifications, ensuring consistent quality and performance. Additionally, the product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming it meets stringent environmental and safety regulations for hazardous substances.