S-94239A109 5/16"-18 x 1 1/2" SAE J429 High-Strength Grade 8 Steel Serrated-Flange Hex Head Screws
High-Strength Grade 8 Steel Serrated-Flange 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 the most demanding heavy-duty applications, reducing the risk of fastener failure.
- Superior corrosion resistance from the zinc-plated steel coating extends service life in harsh industrial environments, minimizing maintenance and replacement costs.
- Enhanced locking security with serrations on the flange prevents loosening under vibration, providing stable and long-lasting connections.
- High hardness rating of Rockwell C33 offers excellent wear resistance, maintaining thread integrity and fastener durability over time.
- Easy installation and removal with the external hex drive design allows for efficient assembly using standard tools, saving time and labor.
- Wide compatibility with UNC coarse threads and Class 2A fit ensures precise engagement and reliable fastening in various materials and conditions.
- Full threading along the 1 1/2" length provides consistent holding power and flexibility in adjustment for diverse project requirements.
Professional Applications & Engineering Value
This Grade 8 zinc-plated steel hex head screw is engineered to address critical challenges in industrial settings, such as vibration-induced loosening and environmental corrosion. The serrated flange enhances locking capability, making it ideal for machinery, automotive assemblies, and structural frameworks where stability is paramount. With a coarse UNC thread and fully threaded design, it ensures quick installation and strong grip in soft materials or high-stress areas. The external hex drive facilitates easy torque application, reducing assembly time while maintaining high tensile strength and durability. Compliant with key standards, it offers a reliable heavy-duty solution for engineers seeking performance and longevity in demanding applications.
Specification Summary & Compliance
This screw features precise Class 2A thread fit and adheres to UNC thread standards for consistent performance. It meets manufacturing specifications under IFI 111 and SAE J429, ensuring quality and reliability. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental safety and regulatory requirements in industrial use.
