S-91247A930 1"-8 x 7" 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 heavy-duty applications.
- Superior corrosion resistance provided by zinc plating, extending service life in harsh industrial environments.
- Optimized for high-torque installation thanks to the external hex drive and 1 1/2" head width for secure fastening.
- Enhanced thread engagement and faster assembly with coarse UNC threading and Class 2A fit for consistent, precise connections.
- Reduced risk of thread stripping due to Rockwell C25 hardness, maintaining integrity under stress.
- Versatile partial threading design allows for effective clamping across a 7" length without unnecessary threading.
- Compliance with major industry standards ensures consistent quality and reliability for engineering and construction projects.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these Grade 5 hex head screws address critical fastening challenges in construction, machinery assembly, and structural applications. The zinc-plated steel construction combats corrosion, reducing maintenance needs in environments exposed to moisture or chemicals. With a coarse UNC thread and Class 2A fit, these screws enable quick, secure installation, minimizing assembly time while providing robust holding power. The external hex drive and substantial head dimensions allow for high-torque application, ensuring joints remain tight under vibration and dynamic loads. Ideal for heavy equipment, framing, and industrial machinery, these fasteners deliver reliable performance where failure is not an option.
Specification Summary & Compliance
This 1"-8 UNC hex head screw features precise Class 2A thread fit and is manufactured to ASME B18.2.1 and SAE J429 standards, ensuring dimensional accuracy and mechanical properties. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally conscious and regulated industries.
