S-90128A744 1/2"-13 x 6 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
- Superior corrosion resistance with zinc plating, extending service life in harsh industrial environments.
- Exceptional tensile strength of 170,000 psi ensures reliable performance under high-stress conditions, preventing fastener failure.
- Precise Class 3A thread fit guarantees secure, vibration-resistant assemblies with minimal risk of loosening.
- Rockwell C37 hardness provides excellent wear resistance, maintaining thread integrity through repeated use.
- 3/8" hex drive design allows for easy installation and high torque application with standard tools.
- Partially threaded shank offers optimal grip and clamping force where full threading isn't required.
- Full compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety for global applications.
Professional Applications & Engineering Value
This 1/2"-13 UNC Socket Head Cap Screw is engineered from zinc-plated alloy steel to address critical challenges in heavy machinery, automotive, and construction sectors. The coarse thread design enables quick assembly and superior holding power in soft materials or where vibration is a concern. With a 170,000 psi tensile strength and Rockwell C37 hardness, it resists deformation under extreme loads, making it ideal for structural frames, equipment mounts, and high-stress bolted joints. The socket head and 3/8" hex drive facilitate installation in confined spaces, while the partial threading provides precise clamping without unnecessary thread engagement, reducing installation time and improving joint reliability.
Specification Summary & Compliance
This fastener features Class 3A thread fit for high precision and UNC coarse threads per inch system standards. It meets ASTM A574 specifications for quenched and tempered alloy steel socket head cap screws, ensuring consistent mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally sensitive applications and global markets.
