S-91236A851 3/4"-10 x 4" 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
- Exceptional load-bearing capacity with 60,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion resistance through zinc plating, extending service life in harsh industrial environments
- Optimized torque transmission with external hex drive and 1 1/8" head width for secure installation
- Enhanced thread engagement with Class 2A thread fit ensuring consistent fastening accuracy
- Reduced cross-threading risk through UNC coarse threading for quicker assembly in structural applications
- Partial threading design providing superior clamping force distribution along the 4" length
- Industry-standard compliance meeting ASME B18.2.1 specifications for guaranteed interchangeability
Professional Applications & Engineering Value
This 3/4"-10 UNC hex head screw delivers critical engineering solutions for industrial assembly challenges. The steel construction with Rockwell B69 hardness provides structural integrity where vibration resistance is paramount, while the zinc plating surface treatment prevents corrosion in moisture-prone environments. The coarse UNC threading ensures rapid installation in structural steel, machinery frames, and heavy equipment where partial threading design prevents joint loosening under dynamic loads. The external hex drive with substantial 1 1/8" head width accommodates high-torque applications, making it ideal for construction, manufacturing, and infrastructure projects requiring 60,000 psi tensile strength fasteners.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with 3/4"-10 UNC coarse threading and minimum 1 3/4" thread length. This hex head screw complies with ASME B18.2.1 manufacturing standards and maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The 4" length with partial threading ensures consistent performance across industrial applications requiring ASTM A307 grade mechanical properties.
