S-90128A721 1/2"-13 x 2 1/4" 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 applications, reducing the risk of fastener failure.
- Zinc-plated alloy steel construction provides excellent corrosion resistance, extending service life in harsh industrial environments.
- Class 3A thread fit offers superior thread engagement and vibration resistance for secure, long-lasting assemblies.
- 1/2"-13 UNC coarse threading enables quick and easy installation, saving time during assembly and maintenance.
- Partially threaded design allows for precise clamping force control and secure fastening in specific joint requirements.
- 3/8" hex drive compatibility ensures easy integration with standard tools, improving installation efficiency.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety for global supply chain compatibility.
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these Socket Head Cap Screws deliver robust performance in machinery, automotive, and heavy equipment assemblies. The zinc-plated alloy steel material combats corrosion effectively, while the 170,000 psi tensile strength and Rockwell C37 hardness prevent stripping and deformation under extreme loads. The 1/2"-13 UNC coarse thread and Class 3A thread fit provide superior resistance to loosening from vibrations, making them ideal for dynamic environments. Their partially threaded and right-hand thread design ensures precise alignment and secure fastening in critical joints, enhancing overall structural integrity and reducing maintenance downtime.
Specification Summary & Compliance
This screw features a 1/2"-13 UNC coarse thread with Class 3A thread fit for high precision and durability. It complies with ASTM A574 specifications for alloy steel socket head cap screws, ensuring consistent manufacturing quality. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety standards for industrial use.
