S-91286A361 1/2"-13 x 6 1/2" 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 tensile strength of 150,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance from the zinc-flake coating extends service life, even in harsh industrial environments.
- High hardness (Rockwell C33) provides excellent wear resistance and durability, minimizing deformation under heavy loads.
- Coarse UNC threads with Class 2A fit offer easier assembly and disassembly, saving time and labor in maintenance.
- Partially threaded design allows for precise clamping force control, ideal for applications requiring specific grip lengths.
- External hex drive enables quick installation with standard tools, enhancing efficiency in assembly lines.
- Compliance with ASME, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations, providing peace of mind for global sourcing.
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 assemblies, and structural frameworks. Made from high-strength steel with a zinc-flake coating, it combats corrosion and wear, extending fastener life in demanding conditions. The 1/2"-13 UNC coarse thread and Class 2A thread fit ensure secure, vibration-resistant connections, reducing maintenance downtime. Its partially threaded configuration allows for optimal load distribution, preventing joint loosening in dynamic applications. By meeting ASME B18.2.1 and other standards, it delivers consistent performance for engineers prioritizing reliability and compliance.
Specification Summary & Compliance
This fastener features precise Class 2A thread fit and adheres to UNC thread standards with a size of 1/2"-13. Manufactured in compliance with ASME B18.2.1 and SAE J429 specifications, it ensures dimensional accuracy and performance reliability. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for global industrial use.
