S-92620A145 5/8"-11 x 14" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws
High-Strength Grade 8 Steel Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional strength and durability with Grade 8 classification, 150,000 psi tensile strength, and Rockwell C33 hardness for reliable performance in demanding applications.
- Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh industrial environments.
- Optimal thread engagement and fast assembly thanks to 5/8"-11 UNC coarse threads and Class 2A thread fit, ensuring secure connections with reduced cross-threading risk.
- Enhanced torque application and easy installation via the external hex head design, compatible with standard wrenches for efficient maintenance.
- Versatile partial threading allows for precise clamping force control, ideal for applications requiring specific unthreaded shank sections.
- Heavy-duty construction with a 14" length and robust steel material, capable of withstanding extreme mechanical stresses.
- Compliance with industry standards including ASME B18.2.1 and SAE J429, guaranteeing consistent quality and interoperability.
Professional Applications & Engineering Value
This Grade 8 hex head screw is engineered to address critical challenges in heavy machinery, construction, and automotive sectors, where high tensile strength and corrosion resistance are paramount. The zinc yellow-chromate plating combats rust and wear in outdoor or humid conditions, while the UNC coarse threads and Class 2A thread fit ensure quick, reliable fastening without stripping. Its partially threaded design provides focused clamping force, reducing stress concentration in structural assemblies. By meeting ASME B18.2.1 and SAE J429 specifications, it delivers predictable performance for bolted joints in industrial equipment, minimizing downtime and maintenance costs.
Specification Summary & Compliance
This fastener adheres to precise dimensional tolerances, including Class 2A thread fit and UNC coarse thread standards (5/8"-11), with a minimum thread length of 1 3/4". It conforms to ASME B18.2.1 and SAE J429 Grade 8 manufacturing specifications, ensuring mechanical reliability. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, supporting environmental and safety regulations for global industrial use.
