S-92620A671 7/16"-14 x 1 1/4" 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 load-bearing capability with 150,000 psi tensile strength for reliable performance in high-stress applications.
- Superior corrosion resistance from zinc yellow-chromate plating, extending service life in harsh industrial environments.
- High hardness rating of Rockwell C33 ensures durability and resistance to wear and deformation.
- Easy installation and removal with external hex drive and standard UNC coarse threads for efficient assembly.
- Precise thread fit with Class 2A tolerance, providing consistent engagement and reducing the risk of cross-threading.
- Full threading design offers maximum grip length and uniform stress distribution along the entire fastener.
- Compliance with industry standards including ASME B18.2.1 and SAE J429, ensuring quality and interchangeability.
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 provides a robust barrier against rust and chemical exposure, reducing maintenance costs and downtime. Its 7/16"-14 UNC coarse thread and external hex drive facilitate quick, secure fastening in high-vibration environments, preventing loosening. Ideal for structural frames, engine components, and industrial equipment, this fully threaded screw ensures reliable performance under extreme loads, backed by 150,000 psi tensile strength and standardized dimensions for seamless integration.
Specification Summary & Compliance
This fastener adheres to precise Class 2A thread fit and UNC coarse thread standards for dimensional accuracy. It meets ASME B18.2.1 and SAE J429 specifications, ensuring consistent manufacturing quality. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it is free from hazardous substances, making it suitable for global industrial use.
