S-95373A198 1/2"-13 x 3" 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 protection with hot-dipped galvanized finish for extended service life in harsh environments
- High tensile strength of 60,000 psi ensures reliable performance under heavy loads and vibration
- Rockwell B69 hardness provides excellent resistance to wear and deformation
- UNC coarse threading enables faster installation and better performance in softer materials
- Class 2A thread fit offers optimal balance between easy assembly and secure fastening
- External hex drive design allows for high torque application with standard tools
- Partial threading provides unthreaded shank for enhanced shear strength in structural applications
Professional Applications & Engineering Value
These hot-dipped galvanized steel hex head screws deliver exceptional performance in demanding industrial environments where corrosion resistance and structural integrity are paramount. The zinc coating provides sacrificial protection against rust and chemical exposure, making them ideal for outdoor construction, marine applications, and chemical processing facilities. The UNC coarse thread pattern ensures rapid installation and superior holding power in wood, steel, and composite materials, while the partial threading design maximizes shear strength for structural connections. Engineered to meet rigorous ASME B18.2.1 standards, these heavy-duty fasteners provide reliable, long-term fastening solutions for bridges, industrial machinery, and infrastructure projects where failure is not an option.
Specification Summary & Compliance
Manufactured to exacting Class 2A thread fit tolerances with UNC coarse threading (1/2"-13) and partial threading configuration. Complies with ASME B18.2.1 dimensional standards and ASTM A307 material specifications for carbon steel bolts. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) requirements for substance restrictions. The 3" length with 1-1/4" minimum thread length provides optimal engagement for various material thicknesses.
