S-91236A628 3/8"-16 x 1 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 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
- Class 2A thread fit guarantees precise, consistent engagement for secure fastening
- Partially threaded design allows for optimal clamping force distribution and prevents thread damage
- External hex drive enables quick installation and high torque application with standard tools
- Coarse UNC threading facilitates faster assembly and better performance in softer materials
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 harsh conditions. The partially threaded design solves critical fastening challenges by concentrating clamping force where needed most, preventing joint loosening in high-vibration environments. With its external hex drive and coarse thread pitch, installation becomes significantly faster while maintaining secure connections in steel frameworks, heavy equipment, and manufacturing systems. The combination of 60,000 psi tensile strength and Rockwell B69 hardness ensures these hex head screws withstand substantial mechanical stress without compromising performance.
Specification Summary & Compliance
This fastener features Class 2A thread fit per UNC standards with precise dimensional accuracy. Manufacturing complies with ASME B18.2.1 specifications ASTM A307, ensuring consistent quality and performance. The product meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) standards (06/14/2023 235 SVHC), confirming environmental responsibility and regulatory adherence for global industrial applications.
