S-91465A185 1/2"-13 x 5" 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
- Robust holding power with 60,000 PSI tensile strength and Rockwell B69 hardness for reliable performance in demanding applications.
- Secure and easy installation using an external square drive, which prevents cam-out and allows for high torque application.
- Optimized for quick assembly with coarse 1/2"-13 UNC threading, reducing installation time and effort.
- Consistent and precise fit ensured by Unified Standard Class 2A thread fit, providing reliable engagement and reducing the risk of cross-threading.
- Versatile fastening solution with a partially threaded shank, offering superior grip and clamping force where needed.
- Durable and long-lasting construction from Grade A steel, providing excellent resistance to wear and environmental factors.
- Compliant with industry standards including ASTM A307 and RoHS 3, ensuring safety and environmental responsibility.
Professional Applications & Engineering Value
This Grade A Steel Square Head Screw is engineered to address common industrial challenges, such as the need for reliable, high-torque fastening in construction, machinery assembly, and heavy equipment. The 1/2"-13 UNC coarse thread design ensures rapid installation and strong holding power, reducing labor time and minimizing the risk of thread stripping. Made from steel with a Rockwell B69 hardness and 60,000 PSI tensile strength, it withstands substantial loads and vibrations, making it ideal for applications where durability is critical. The external square drive allows for secure tool engagement, preventing slippage and ensuring consistent performance in high-stress environments. Its partially threaded configuration provides focused clamping force, enhancing joint integrity in structural and mechanical setups.
Specification Summary & Compliance
This screw features a 1/2"-13 UNC thread with Unified Standard Class 2A fit for precise dimensional accuracy. It complies with ASTM A307 specifications for low-strength fasteners and is RoHS 3 (2015/863/EU) Compliant, adhering to environmental regulations. The inch system measurements ensure compatibility with standard industrial tools and components.
