S-92620A920 7/8"-14 x 1 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 zinc yellow-chromate plating extends service life in harsh industrial environments, minimizing maintenance needs.
- Precise Class 2A thread fit with UNF fine threads provides secure, vibration-resistant connections for critical assemblies.
- Grade 8 steel construction with Rockwell C33 hardness delivers outstanding durability and resistance to wear under heavy loads.
- External hex drive design allows for easy installation and high torque application with standard tools, improving assembly efficiency.
- Full threading along the 1½" length offers maximum grip and adjustability in various material thicknesses.
- Compliance with ASME B18.2.1 and SAE J429 standards guarantees consistent quality and interoperability in professional applications.
Professional Applications & Engineering Value
This Grade 8 hex head screw is engineered to address demanding industrial challenges where high tensile strength and corrosion resistance are critical. The steel material combined with zinc yellow-chromate plating provides a robust barrier against rust and chemical exposure, making it ideal for heavy machinery, construction equipment, and automotive assemblies. Its 7/8"-14 UNF fine thread and Class 2A fit ensure tight, secure fastening that resists loosening under vibration, while the external hex drive facilitates quick installation in confined spaces. These features make it a reliable choice for heavy-duty applications requiring long-term performance and minimal downtime.
Specification Summary & Compliance
This fastener meets Class 2A thread fit tolerances per UNF standards, with precise dimensions including a 1½" length and 7/8"-14 thread size. It conforms to ASME B18.2.1 and SAE J429 specifications for Grade 8 bolts, ensuring mechanical integrity. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, supporting environmental and safety regulations in global supply chains.
