S-92620A654 3/8"-24 x 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 load-bearing capacity with Grade 8 classification and 150,000 psi tensile strength for reliable performance in high-stress applications.
- Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh industrial environments.
- Precise fine threading (UNF 3/8"-24) ensures secure, vibration-resistant connections with Class 2A fit for consistent assembly quality.
- High hardness (Rockwell C33) minimizes wear and deformation, maintaining fastener integrity under repeated use.
- Full threading along the 3/4" length allows for maximum grip and adjustability in various material thicknesses.
- External hex drive design enables easy installation and high torque application with standard tools, reducing assembly time.
- Compliance with major industry standards including ASME B18.2.1 and SAE J429, ensuring interoperability and safety in regulated sectors.
Professional Applications & Engineering Value
This Grade 8 hex head screw is engineered to address critical challenges in heavy machinery, automotive, and construction assemblies where joint failure is not an option. The UNF fine thread profile delivers enhanced clamping force and resistance to loosening under dynamic loads, while the zinc yellow-chromate finish provides a durable barrier against oxidation and chemical exposure. Its fully threaded 3/4" length and external hex drive facilitate quick, secure fastening in confined spaces, reducing downtime and maintenance costs. Ideal for structural frames, engine components, and industrial equipment, this steel fastener combines high tensile strength with consistent performance in demanding environments.
Specification Summary & Compliance
This product meets Class 2A thread fit tolerances per UNF standards, ensuring precise engagement and interchangeability. Manufacturing adheres to ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and mechanical properties. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material restrictions are met for global industrial use.
