S-92620A607 5/16"-24 x 1" 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 with zinc yellow-chromate plating extends service life in harsh industrial environments.
- High hardness rating (Rockwell C33) provides excellent wear resistance and durability under repeated loads.
- Precision UNF fine threading offers better engagement and vibration resistance compared to coarse threads.
- Full threading design allows for maximum grip length and uniform stress distribution along the entire fastener.
- External hex drive enables easy installation and removal with standard tools, improving assembly efficiency.
- Compliance with industry standards (ASME B18.2.1, SAE J429) guarantees consistent quality and interchangeability.
Professional Applications & Engineering Value
This Grade 8 hex head screw is engineered for demanding industrial settings where high tensile strength and corrosion resistance are critical. The steel construction combined with zinc yellow-chromate plating effectively combats rust and chemical exposure, making it ideal for automotive, machinery, and structural applications. The UNF fine thread design ensures secure fastening in materials prone to vibration loosening, while the external hex drive facilitates quick installation with common wrenches. By meeting rigorous standards like ASME B18.2.1, it provides reliable performance in heavy-duty assemblies, reducing maintenance needs and downtime.
Specification Summary & Compliance
This fastener features a 5/16"-24 UNF fine thread with Class 2A thread fit for precise tolerance and easy assembly. It complies with ASME B18.2.1 and SAE J429 specifications, ensuring dimensional accuracy and mechanical properties. Additionally, it is RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, adhering to environmental and safety regulations for hazardous substances.