S-91465A161 1/2"-13 x 1 1/2" 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 secure installation and removal in high-torque applications
- Excellent durability and corrosion resistance through ASTM Grade A steel construction with Rockwell B69 hardness
- Reliable fastening performance with 60,000 PSI tensile strength ensuring consistent load-bearing capacity
- Quick installation and removal thanks to the square head design that accommodates standard wrenches
- Secure thread engagement with UNC coarse thread spacing that resists vibration loosening
- Full-length threading provides maximum grip and holding power across the entire fastener length
- Regulatory compliance assurance with RoHS 3 and ASTM A307 specifications for industrial safety standards
Professional Applications & Engineering Value
This 1/2"-13 UNC square head screw delivers exceptional engineering value in demanding industrial environments where vibration resistance and high torque requirements are critical. The ASTM Grade A steel construction provides reliable strength for structural applications, while the coarse thread spacing ensures rapid installation and superior resistance to loosening under dynamic loads. The external square drive design offers positive engagement with standard tools, preventing cam-out during high-torque applications. These fully threaded fasteners are engineered for heavy machinery, construction equipment, and industrial assemblies where 60,000 PSI tensile strength and consistent performance are essential for long-term reliability and safety.
Specification Summary & Compliance
This square head screw features Unified Standard Class 2A thread fit for precise dimensional accuracy and proper assembly clearance. The fastener meets ASTM A307 specifications for low carbon steel structural bolts and is RoHS 3 (2015/863/EU) compliant for environmental safety. Manufacturing follows standardized 1/2"-13 UNC coarse thread parameters with right-hand threading direction, ensuring compatibility with industry-standard components and installation practices.
