S-91247A768 9/16"-12 x 2 3/4" 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 ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Zinc plating provides superior corrosion resistance, extending the service life of the screw in various environmental conditions.
- Grade 5 steel construction with Rockwell C25 hardness offers excellent durability and resistance to wear and deformation.
- UNC coarse thread spacing allows for quicker installation and better grip in a wide range of materials, improving assembly efficiency.
- Partially threaded design with Class 2A thread fit ensures precise engagement and ease of alignment, minimizing cross-threading issues.
- External hex drive and hex head facilitate easy tightening with standard tools, saving time during maintenance and installation.
- Compliance with ASME B18.2.1, SAE J429, RoHS 3, and REACH guarantees adherence to industry standards for safety and environmental responsibility.
Professional Applications & Engineering Value
This 9/16"-12 UNC Grade 5 zinc plated steel hex head screw is engineered to address common industrial challenges, such as vibration loosening and corrosion in demanding environments. The coarse thread spacing and partially threaded design provide secure fastening in structural assemblies, machinery, and automotive components, where high tensile strength and durability are critical. The zinc plating enhances corrosion resistance, making it ideal for outdoor or humid conditions, while the external hex drive ensures straightforward installation with standard wrenches. By meeting rigorous standards like ASME B18.2.1 and SAE J429, this screw delivers consistent performance, reducing downtime and maintenance costs in heavy-duty industrial applications.
Specification Summary & Compliance
This screw features precise Class 2A thread fit and UNC coarse threading with a thread size of 9/16"-12, ensuring accurate engagement and reliability. It complies with ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for restricted substances.
