S-91247A691 7/16"-14 x 5 1/2" 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
- Superior load-bearing capacity with 120,000 psi tensile strength, ideal for high-stress industrial applications.
- Enhanced corrosion resistance from zinc plating, extending service life in demanding environments.
- Reliable fastening performance with Grade 5 steel and Rockwell C25 hardness, resisting wear and deformation.
- Easy installation and removal thanks to the external hex drive and coarse UNC threading for quick assembly.
- Precise thread fit with Class 2A tolerance, ensuring consistent engagement and reduced loosening risks.
- Versatile partial threading allowing secure clamping where full threading isn't required.
- Compliance with major standards including ASME B18.2.1 and SAE J429, guaranteeing quality and interoperability.
Professional Applications & Engineering Value
This 7/16"-14 UNC hex head screw is engineered to address common industrial challenges such as vibration-induced loosening and environmental corrosion. Made from Grade 5 steel with a zinc plated finish, it offers robust durability and resistance to rust, making it suitable for heavy machinery, construction frameworks, and automotive assemblies. The coarse thread design and partial threading provide excellent grip in softer materials and allow for adjustable clamping force, reducing the need for frequent maintenance. Its external hex drive ensures straightforward torque application, speeding up installation in tight spaces while maintaining high tensile strength for long-term reliability in demanding industrial applications.
Specification Summary & Compliance
This fastener adheres to precise dimensional standards, including Class 2A thread fit and UNC coarse spacing, ensuring consistent performance. It meets ASME B18.2.1 and SAE J429 specifications for quality and safety. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its environmental safety and suitability for global industrial use.
