S-92865A159 5/16"-18 x 1 5/8" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 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 120,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure.
- Grade 5 steel construction with Rockwell C25 hardness provides superior durability and resistance to wear, extending service life.
- Zinc plating finish offers enhanced corrosion resistance, protecting the screw in harsh industrial environments.
- Coarse UNC thread with Class 2A fit allows for quick and easy installation while maintaining secure fastening.
- Partially threaded design provides optimal grip and clamping force where needed, improving joint stability.
- External hex drive and hex head enable straightforward installation with common tools, saving time and labor.
- Compliance with ASME B18.2.1 and SAE J429 standards guarantees consistent quality and interoperability in professional settings.
Professional Applications & Engineering Value
This 5/16"-18 UNC Grade 5 hex head screw is engineered to address critical fastening challenges in heavy-duty industrial environments. Made from high-strength steel and featuring a coarse thread design, it ensures rapid assembly and robust holding power in machinery, structural frames, and equipment subjected to high vibration or load stresses. The zinc plating provides a protective barrier against rust and corrosion, making it ideal for outdoor or humid conditions. With a partially threaded shank, it concentrates clamping force effectively, reducing the risk of loosening and enhancing safety in applications like construction, automotive assembly, and manufacturing systems where reliability is paramount.
Specification Summary & Compliance
This fastener adheres to precise dimensional standards, including Class 2A thread fit and UNC coarse threading for consistent performance. It meets ASME B18.2.1 and SAE J429 specifications, ensuring manufacturing accuracy and strength reliability. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental safety and regulatory requirements in global supply chains.
