S-91236A632 3/8"-16 x 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 performance under heavy loads and vibration
- Rockwell B69 hardness rating provides excellent durability and resistance to wear
- External hex drive design allows for easy installation and removal with standard tools
- Class 2A thread fit guarantees consistent, reliable engagement while maintaining installation efficiency
- Partially threaded configuration provides optimal clamping force distribution for secure fastening
- UNC coarse threading enables quick assembly and reduced cross-threading risks
Professional Applications & Engineering Value
This 3/8"-16 UNC hex head screw delivers exceptional engineering value across industrial applications where reliability is paramount. The steel construction with zinc plating provides essential corrosion protection for machinery, structural assemblies, and equipment exposed to challenging environments. The partially threaded design concentrates clamping force precisely where needed, preventing joint loosening in high-vibration settings. With 60,000 psi tensile strength and Rockwell B69 hardness, these external hex drive fasteners maintain integrity in heavy-duty applications including construction equipment, manufacturing machinery, and transportation systems. The coarse UNC threading ensures rapid assembly while the Class 2A thread fit provides consistent performance across production runs, reducing installation time and maintenance requirements.
Specification Summary & Compliance
This hex head screw features precision 3/8"-16 UNC coarse threads with Class 2A thread fit tolerance for reliable engagement. Manufacturing complies with ASME B18.2.1 dimensional standards and ASTM A307 material specifications. The product is fully compliant with RoHS 3 (2015/863/EU) environmental directives and REACH (EC 1907/2006) regulations regarding substance restrictions, ensuring safe use across global markets.
