S-95373A201 1/2"-13 x 3 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 hot-dipped galvanized finish, ideal for harsh industrial environments
- High tensile strength of 60,000 psi ensures reliable performance under heavy loads
- Rockwell B69 hardness provides excellent durability and wear resistance
- Partially threaded UNC coarse thread design allows for faster installation and secure fastening
- Class 2A thread fit guarantees consistent engagement and easy assembly
- External hex drive with 3/4" head width enables high-torque application with standard tools
- Comprehensive compliance with ASME B18.2.1, RoHS 3, and REACH standards for quality assurance
Professional Applications & Engineering Value
This 1/2"-13 UNC hex head screw delivers exceptional engineering value in demanding industrial applications where corrosion resistance and structural integrity are paramount. The hot-dipped galvanized steel construction provides superior protection against rust and environmental degradation, significantly extending service life in outdoor or high-moisture environments. The partially threaded design with coarse UNC threading ensures rapid installation while maintaining secure fastening in structural assemblies, machinery, and heavy equipment. With 60,000 psi tensile strength and Rockwell B69 hardness, this fastener withstands vibration, dynamic loads, and extreme conditions without compromising performance. The external hex drive facilitates high-torque applications using standard wrenches, making it ideal for construction, manufacturing, and infrastructure projects requiring reliable, long-lasting fastening solutions.
Specification Summary & Compliance
This heavy-duty hex head screw features precise Class 2A thread fit with 1/2"-13 UNC coarse threading and 3 1/2" length with minimum thread length of 1 1/4". Manufactured to ASME B18.2.1 specifications using ASTM A307 steel, it ensures dimensional accuracy and mechanical reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety standards for industrial fasteners.
