S-90128A634 3/8"-16 x 2 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 tolerances for secure fastening and vibration resistance in critical assemblies.
- Rockwell C37 hardness delivers excellent wear resistance, maintaining thread integrity and durability over repeated use.
- Partially threaded design allows for controlled clamping force and easier alignment in specific mounting scenarios.
- 5/16" hex drive socket head enables high-torque installation with standard tools, improving assembly efficiency and reducing stripping.
- Compliance with ASTM A574, RoHS 3, and REACH ensures consistent quality, safety, and environmental responsibility for global supply chains.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these Socket Head Cap Screws address critical challenges in machinery, automotive, and heavy equipment assembly. The zinc-plated alloy steel material combats corrosion, while the UNC coarse thread and Class 3A fit provide rapid installation and secure holding power in high-vibration environments. With a Rockwell C37 hardness and 170,000 psi tensile strength, these fasteners prevent stripping and fatigue under extreme loads. The partially threaded configuration is ideal for applications requiring precise unthreaded shank engagement, such as in pivoting mechanisms or aligned components, ensuring reliable performance in inch-system designs.
Specification Summary & Compliance
This 3/8"-16 UNC screw features a Class 3A thread fit for precision and a coarse thread spacing for quick assembly. It meets ASTM A574 specifications for high-strength socket head cap screws and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards.
