S-91236A750 1/2"-13 x 12" 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 harsh 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 in demanding applications
- Class 2A thread fit offers consistent, easy assembly while maintaining secure fastening integrity
- External hex drive design enables quick installation and removal with standard tools, reducing labor time
- Partially threaded shank allows for precise clamping force distribution in structural connections
- Coarse UNC threading facilitates faster installation and better performance in wood and soft materials
Professional Applications & Engineering Value
This heavy-duty 1/2"-13 UNC hex head screw delivers exceptional engineering value in construction, machinery assembly, and structural framing applications. The steel construction combined with zinc plating provides robust protection against corrosion, making it ideal for outdoor equipment and industrial environments where moisture exposure is common. The coarse thread design ensures rapid installation in wood, composite materials, and structural steel connections, while the partial threading prevents joint loosening under dynamic loads. With its external hex drive and substantial 12" length, this fastener solves critical challenges in heavy equipment maintenance, bridge construction, and industrial machinery where high-strength, corrosion-resistant fastening solutions are essential for long-term structural integrity.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC coarse threading (1/2"-13) and partial threading configuration. Complies with ASME B18.2.1 specifications where identified as ASTM A307 grade. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial sectors. The inch system measurements guarantee compatibility with North American machinery standards and replacement part requirements.
