S-91236A736 1/2"-13 x 6" 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 performance under heavy loads and vibration.
- Rockwell B69 hardness provides excellent durability and resistance to wear and deformation.
- Coarse UNC thread and Class 2A fit offer faster assembly and reliable engagement in a wide range of materials.
- External hex drive and hex head design allow for high-torque installation with standard tools, simplifying maintenance.
- Partially threaded shank provides unthreaded grip length for precise clamping in structural applications.
- Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees consistent quality and environmental safety for global projects.
Professional Applications & Engineering Value
This 1/2"-13 UNC hex head screw is engineered to solve critical fastening challenges in heavy-duty industrial applications. The Grade 2 steel construction, combined with a zinc-plated finish, resists corrosion in harsh conditions, reducing maintenance frequency and failure risks. The coarse thread design ensures quick, secure installation in wood, metal, and composite materials, while the partially threaded configuration prevents joint loosening under dynamic loads. With an external hex drive, it supports high-torque tightening for machinery, structural frames, and equipment assembly, delivering long-term reliability and cost efficiency.
Specification Summary & Compliance
This screw adheres to Class 2A thread fit tolerances and UNC coarse thread standards, ensuring dimensional accuracy and interchangeability. It is manufactured in accordance with ASME B18.2.1 and ASTM A307 specifications, providing consistent mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting environmental and safety requirements for global supply chains.
