S-90128A738 1/2"-13 x 5 1/2" 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 applications, reducing the risk of fastener failure.
- Zinc-plated alloy steel construction provides superior corrosion resistance, extending service life in harsh industrial environments.
- Class 3A thread fit offers precise, tight-tolerance engagement for secure fastening and vibration resistance.
- 3/8" hex drive and standard socket head allow for easy installation and high torque application with common tools.
- Partially threaded design enables optimal clamping force distribution and secure joint assembly.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety for regulated industries.
- Coarse UNC threads facilitate quick assembly and disassembly, improving maintenance efficiency.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, this 1/2"-13 UNC Socket Head Cap Screw addresses critical challenges in machinery assembly, structural frameworks, and heavy equipment. The zinc-plated alloy steel material combats corrosion while maintaining Rockwell C37 hardness, ensuring durability under repetitive stress. Its partially threaded configuration and Class 3A thread fit provide exact alignment and clamping force, minimizing loosening in high-vibration environments like automotive or construction applications. The 3/8" hex drive simplifies installation in confined spaces, enhancing workflow efficiency without compromising on the 170,000 PSI tensile strength required for safety-critical connections.
Specification Summary & Compliance
This screw adheres to Class 3A thread fit for precise UNC coarse threading, with a minimum thread length of 1 3/4" and overall length of 5 1/2". Manufactured in accordance with ASTM A574 specifications, it ensures consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible sourcing and usage in global markets.
