S-91583A121 1/2"-13 x 2" ASME B18.2.6, ASTM A325, ASTM F3125 Medium-Strength Steel Heavy Hex Head Screws for Structural Applications
Medium-Strength Steel Heavy Hex Head Screws for Structural Applications
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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
- Exceptional corrosion resistance with hot-dipped galvanized steel coating, ideal for outdoor and harsh industrial environments
- High tensile strength of 120,000 PSI ensures reliable performance in heavy-duty structural and construction applications
- Rockwell C19 hardness provides superior wear resistance and durability under high-stress conditions
- External hex drive design allows for easy installation and removal with standard tools, reducing assembly time
- Class 2A UNC coarse threads offer faster installation and better performance in materials requiring coarse threading
- Partial threading with 1" grip length provides optimal clamping force and vibration resistance in joint connections
- Compliance with major industry standards including ASME B18.2.6, ASTM A325, and ASTM F3125 ensures quality and reliability
Professional Applications & Engineering Value
Engineered for demanding structural applications, these Grade A325 hex head screws deliver exceptional performance where failure is not an option. The hot-dipped galvanized steel construction provides superior corrosion protection, making them ideal for bridges, building frameworks, and outdoor infrastructure projects exposed to environmental elements. The external hex drive combined with UNC coarse threading enables quick installation in steel-to-steel connections, while the partial threading design ensures maximum clamping force distribution. With 120,000 PSI tensile strength and Rockwell C19 hardness, these fasteners withstand extreme loads and vibrations in heavy machinery, structural steel assemblies, and industrial equipment where reliability is paramount.
Specification Summary & Compliance
This 1/2"-13 hex head screw features Class 2A thread fit with UNC coarse threading (13 TPI) and partial threading configuration. Manufactured to exacting standards including ASME B18.2.6, ASTM A325, and ASTM F3125 specifications. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial applications.
