S-91583A235 1"-8 x 3" 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 protection with hot-dipped galvanized steel coating, ensuring long-term durability in harsh outdoor or industrial environments.
- High tensile strength of 120,000 PSI provides reliable load-bearing capacity for critical structural connections.
- Rockwell C19 hardness offers superior resistance to wear and deformation under heavy loads.
- Partially threaded design with 1 1/4" grip length allows for precise clamping force distribution and prevents joint loosening.
- Coarse UNC thread with Class 2A fit ensures easy installation and consistent engagement in structural steel applications.
- External hex drive and hex head facilitate quick tightening with standard tools, reducing assembly time.
- Full compliance with industry standards including ASME B18.2.6, ASTM A325, and ASTM F3125, guaranteeing interchangeability and performance reliability.
Professional Applications & Engineering Value
Engineered for heavy-duty structural applications, these Grade A325 hex head screws deliver exceptional performance in construction, bridge building, and industrial machinery. The hot-dipped galvanized steel material provides robust corrosion resistance, addressing common failure points in exposed environments. With a 1"-8 UNC coarse thread and partial threading, these fasteners optimize load distribution while preventing shear plane issues in steel-to-steel connections. The 120,000 PSI tensile strength and Rockwell C19 hardness ensure these screws maintain integrity under dynamic loads and vibration, making them ideal for critical joints where safety and longevity are paramount. The external hex drive design allows for high-torque installation with common industrial tools, streamlining assembly processes in time-sensitive projects.
Specification Summary & Compliance
This 1"-8 UNC hex head screw features precise Class 2A thread fit per ASME standards, ensuring consistent engagement and reliability. Manufacturing complies with ASME B18.2.6, ASTM A325, and ASTM F3125 specifications for dimensional accuracy and mechanical properties. Environmental compliance is confirmed with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, making these fasteners suitable for global industrial applications requiring strict material restrictions.
