S-90128A844 1/2"-20 x 1 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.
- Precision Class 3A fine threading provides a tighter, more secure fit, minimizing vibration loosening and enhancing assembly integrity.
- Zinc-plated alloy steel construction offers superior corrosion resistance, extending service life in harsh industrial environments.
- Rockwell C37 hardness delivers excellent wear resistance, maintaining thread integrity through repeated use and disassembly.
- 3/8" hex drive socket head allows for high-torque installation with standard tools, speeding up assembly and reducing labor time.
- Full threading along the 1-1/2" length ensures consistent engagement and clamping force across the entire fastener.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety, meeting global regulatory standards.
Professional Applications & Engineering Value
This 1/2"-20 UNF Socket Head Cap Screw is engineered to address critical challenges in industrial assembly, where vibration resistance, high clamp load, and durability are paramount. The zinc-plated alloy steel material combats corrosion in demanding settings like machinery, automotive, and construction equipment, while the fine thread and Class 3A fit provide superior holding power against dynamic loads. Its high tensile strength and Rockwell C37 hardness make it ideal for applications requiring repeated disassembly without thread damage, ensuring long-term reliability and reduced maintenance costs in high-strength fastener systems.
Specification Summary & Compliance
This socket head cap screw features a 1/2"-20 UNF fine thread with Class 3A thread fit for precise dimensional accuracy. It is manufactured in accordance with ASTM A574 specifications, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.
