S-91465A167 1/2"-13 x 2" ASTM A307 Square Head Screws
Square 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 torque transmission with external square drive design for reliable installation and removal in demanding applications
- Enhanced durability through Grade A steel construction with Rockwell B69 hardness for long service life
- Optimized load distribution with 60,000 PSI tensile strength providing reliable performance under stress
- Quick assembly efficiency with coarse UNC threading that resists cross-threading and speeds installation
- Precise thread engagement through Unified Standard Class 2A fit ensuring consistent performance
- Versatile application capability with partially threaded design offering both gripping and clearance functions
- Environmental compliance assurance with RoHS 3 compliance meeting modern regulatory requirements
Professional Applications & Engineering Value
This 1/2"-13 UNC square head screw delivers exceptional engineering value in heavy-duty industrial applications where reliability is paramount. The Grade A steel construction combined with coarse threading provides superior resistance to vibration loosening, making it ideal for structural connections, machinery assembly, and construction projects. The external square drive design ensures maximum torque transmission without cam-out, while the partially threaded configuration offers optimal clamping force distribution. With its 60,000 PSI tensile strength and Rockwell B69 hardness, this fastener maintains integrity in high-stress environments, solving common failure points in industrial equipment and structural frameworks.
Specification Summary & Compliance
This square head screw features precise Unified Standard Class 2A thread fit with 1/2"-13 UNC coarse threading and 1-1/4" minimum thread length. Manufactured to ASTM A307 specifications for Grade A fasteners, it ensures consistent dimensional accuracy and mechanical properties. The product is fully RoHS 3 (2015/863/EU) compliant, meeting current environmental regulations for hazardous substance restrictions. All dimensions including the 2" length, 3/4" head width, and 21/64" head height maintain strict industrial standards for reliable performance across applications.