S-91236A592 5/16"-18 x 2 1/4" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws
Low-Strength 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
- Superior strength and durability with 60,000 psi tensile strength and Rockwell B69 hardness for reliable performance in demanding applications.
- Enhanced corrosion resistance provided by the zinc plating, extending service life in various environmental conditions.
- Secure and precise fastening ensured by the Class 2A thread fit and UNC coarse thread design, reducing the risk of cross-threading.
- Easy installation and removal with the external hex drive and hex head, compatible with standard wrenches for efficient assembly.
- Optimized load distribution due to the partially threaded design, providing strong grip where needed without unnecessary threading.
- Compliance with industry standards including ASME B18.2.1, ensuring consistent quality and interchangeability in industrial settings.
- Environmental and safety adherence through RoHS 3 and REACH compliance, supporting sustainable and safe manufacturing practices.
Professional Applications & Engineering Value
This 5/16"-18 UNC hex head screw is engineered from steel with a zinc-plated finish to address common industrial challenges such as vibration loosening and corrosion in harsh environments. The coarse thread and Class 2A fit enable quick, reliable assembly in materials like metal and wood, reducing installation time and minimizing thread damage. Ideal for construction, machinery, and heavy-duty applications, its partially threaded design concentrates clamping force effectively, preventing joint failure. By meeting ASME B18.2.1 specifications, it ensures dimensional accuracy and compatibility, making it a trusted choice for engineers seeking durability and regulatory compliance in industrial fasteners.
Specification Summary & Compliance
This screw features precise Class 2A thread fit and adheres to UNC coarse thread standards with a thread size of 5/16"-18. It is manufactured in compliance with ASME B18.2.1 and ASTM A307 specifications, ensuring high-quality performance. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for global supply chains.
