S-91247A934 1"-8 x 10" 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 load-bearing capacity with 120,000 psi tensile strength for reliable performance in demanding applications.
- Superior corrosion resistance due to zinc plating, extending service life in harsh industrial environments.
- Optimized for high-torque installation with an external hex drive and robust hex head design for secure fastening.
- Enhanced durability and wear resistance from Rockwell C25 hardness, reducing the risk of stripping or deformation.
- Reliable thread engagement and vibration resistance with coarse UNC threading and Class 2A fit for consistent hold.
- Versatile partial threading allows for precise clamping force control and is ideal for components requiring unthreaded shank sections.
- Compliance with major industry standards including ASME B18.2.1, SAE J429, RoHS 3, and REACH, ensuring quality and environmental safety.
Professional Applications & Engineering Value
This Grade 5 hex head screw is engineered to address critical challenges in heavy machinery, structural steel connections, and industrial equipment assembly. The partially threaded 1"-8 UNC coarse thread design ensures rapid installation and high resistance to loosening under dynamic loads, while the zinc plating provides a protective barrier against rust and corrosion in outdoor or high-moisture settings. Its external hex drive and substantial head dimensions facilitate easy application of high torque with standard tools, reducing installation time and improving worksite efficiency. By combining high tensile strength and precise Class 2A thread fit, this fastener minimizes the risk of joint failure, making it a trusted choice for engineers and procurement specialists seeking reliability in construction, manufacturing, and automotive sectors.
Specification Summary & Compliance
This hex head screw features a 1"-8 UNC coarse thread with Class 2A thread fit for consistent dimensional accuracy. It is manufactured from steel to Grade 5 standards, achieving 120,000 psi tensile strength and Rockwell C25 hardness. The product conforms to ASME B18.2.1 and SAE J429 specifications, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations.
