S-92865A175 5/16"-18 x 5 1/4" 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 provides reliable performance in high-stress applications, reducing the risk of fastener failure.
- Zinc plating finish offers superior corrosion resistance, extending the fastener's lifespan in harsh or outdoor environments.
- Grade 5 classification and Rockwell C25 hardness ensure high durability and resistance to wear, ideal for repetitive or heavy-duty use.
- Partially threaded UNC coarse thread design allows for easier alignment and faster installation, saving valuable assembly time.
- Class 2A thread fit ensures consistent and secure engagement with mating nuts, minimizing loosening from vibration.
- External hex drive and hex head provide a firm grip for high-torque applications, enabling efficient installation with common tools.
- Compliance with ASME, SAE, RoHS, and REACH standards guarantees product quality, safety, and environmental responsibility for industrial procurement.
Professional Applications & Engineering Value
This Grade 5 hex head screw is engineered to address critical fastening challenges in demanding industrial settings. The zinc plated steel construction provides a robust barrier against corrosion, making it suitable for outdoor machinery, construction frameworks, and automotive assemblies where exposure to moisture is a concern. The 5/16"-18 UNC coarse thread and partial threading design enhance grip and reduce the risk of cross-threading during high-speed assembly lines. With a tensile strength of 120,000 PSI and Rockwell C25 hardness, it withstands heavy loads and vibrations in equipment manufacturing, structural supports, and transportation industries, ensuring long-term reliability and minimizing maintenance downtime.
Specification Summary & Compliance
This fastener features precise Class 2A thread fit and adheres to UNC coarse thread standards for consistent performance. It meets ASME B18.2.1 and SAE J429 manufacturing specifications, ensuring dimensional accuracy and mechanical properties. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it is free from hazardous substances, supporting safe and sustainable industrial use.
