S-91309A619 3/8"-16 x 1/2" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws
Low-Strength 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 corrosion resistance with zinc plating, extending service life in demanding industrial environments.
- High tensile strength of 60,000 psi ensures reliable, heavy-duty fastening for critical applications.
- Class 2A thread fit provides consistent, easy assembly and interchangeability with standard nuts.
- Rockwell B69 hardness offers excellent durability and resistance to wear and deformation.
- Coarse UNC thread enables quick installation and is less prone to clogging in rugged conditions.
- External hex drive design allows for high torque application with common tools, speeding up assembly.
- Full threading along the 1/2" length ensures maximum grip and uniform stress distribution.
Professional Applications & Engineering Value
This 3/8"-16 UNC hex head screw is engineered from high-strength steel to address common industrial challenges such as vibration loosening and material fatigue. The zinc plating provides a protective barrier against rust and corrosion, making it ideal for outdoor equipment, machinery assembly, and structural frameworks exposed to harsh conditions. Its coarse thread design ensures rapid installation and reliable performance in applications where fine debris or coatings might impede threading. By combining 60,000 psi tensile strength with a Class 2A thread fit, this fastener delivers consistent clamping force and ease of maintenance, reducing downtime in manufacturing, construction, and automotive sectors. It meets rigorous standards, ensuring compatibility and safety in heavy-duty fastening solutions.
Specification Summary & Compliance
This product adheres to precise dimensional tolerances, including a Class 2A thread fit for consistent assembly. It conforms to ASME B18.2.1 and ASTM A307 specifications, ensuring reliability in mechanical and structural applications. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental and safety standards in global supply chains.
