S-91251A374 1/2"-13 x 6 3/4" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel Socket 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 tensile strength of 170,000 psi ensures reliable performance in high-stress industrial environments, reducing the risk of fastener failure.
- Rockwell C37 hardness provides superior resistance to wear and deformation, extending the service life of your assemblies.
- Class 3A thread fit offers precise, tight tolerances for secure fastening and vibration resistance in critical applications.
- Black-oxide coating on alloy steel enhances corrosion resistance and provides a durable, non-reflective finish for harsh conditions.
- 3/8" hex drive with standard socket head allows for easy installation and high torque application with common tools, minimizing assembly time.
- Partially threaded design with 1 1/2" minimum thread length enables flexible clamping and alignment in varied material thicknesses.
- Coarse UNC threads facilitate quick assembly and disassembly, even in environments with debris or minor damage.
Professional Applications & Engineering Value
These socket head cap screws are engineered to address common industrial challenges, such as vibration loosening and material fatigue. Made from black-oxide alloy steel, they offer enhanced durability and corrosion protection, making them ideal for heavy machinery, automotive systems, and structural frameworks. The 1/2"-13 UNC coarse thread with Class 3A fit ensures a secure hold in high-vibration settings, while the hex drive design allows for efficient installation in confined spaces. By combining high tensile strength and precise threading, these screws reduce maintenance needs and improve the longevity of industrial equipment, supporting reliable performance in demanding applications.
Specification Summary & Compliance
This product features a Class 3A thread fit with UNC coarse threads for consistent dimensional accuracy. It complies with ASTM A574 specifications for high-strength socket head cap screws and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe and sustainable use in global markets.
