S-92620A718 1/2"-13 x 1 3/4" 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 reliability with Grade 8 classification, supporting up to 150,000 psi tensile strength for demanding industrial applications.
- Superior corrosion resistance provided by the zinc yellow-chromate plating, extending service life in harsh environments.
- Optimized for easy installation and high torque thanks to the external hex drive and coarse UNC thread design, ensuring a secure and quick assembly.
- Consistent and precise fit with Class 2A thread fit, reducing the risk of cross-threading and improving fastener integrity.
- Enhanced durability and wear resistance from Rockwell C33 hardness, maintaining performance under heavy loads and vibration.
- Full threading for maximum grip along the entire 1 3/4" length, providing uniform clamping force in thick materials.
- Compliance with major industry standards including ASME B18.2.1 and SAE J429, ensuring quality and interoperability in professional settings.
Professional Applications & Engineering Value
This Grade 8 hex head screw is engineered to address critical challenges in heavy machinery, construction, and automotive assemblies where high tensile strength and corrosion resistance are paramount. The steel material combined with zinc yellow-chromate plating offers robust protection against rust and chemical exposure, reducing maintenance costs. Its 1/2"-13 UNC coarse thread and external hex drive facilitate efficient installation in high-vibration environments, ensuring reliable performance in structural frames, engine components, and industrial equipment. By meeting strict specifications like ASME B18.2.1, it delivers consistent quality for B2B procurement, minimizing downtime and enhancing operational safety.
Specification Summary & Compliance
This fastener features precise Class 2A thread fit and adheres to UNC coarse thread standards for dimensional accuracy. It complies with ASME B18.2.1 and SAE J429 manufacturing specifications, ensuring reliable performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for industrial use.
