S-90128A243 1/4"-20 x 5/8" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel Socket Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional tensile strength of 170,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
- Corrosion-resistant zinc plating on alloy steel enhances durability and extends service life in harsh industrial environments.
- Precise Class 3A thread fit provides superior engagement and vibration resistance, minimizing loosening in dynamic applications.
- Hex socket drive design allows for high-torque installation and removal with standard tools, improving assembly efficiency.
- Coarse UNC threads enable quick assembly and disassembly, saving time in maintenance and production workflows.
- Full threading along the 5/8" length offers versatile fastening depth and consistent clamping force across the entire shank.
- Compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety for global supply chain integration.
Professional Applications & Engineering Value
This zinc-plated alloy steel socket head cap screw is engineered to address critical challenges in industrial settings, such as vibration-induced loosening and corrosion degradation. The UNC coarse thread and Class 3A fit provide a secure, tight connection that maintains integrity in machinery, automotive assemblies, and heavy equipment. Its high tensile strength and Rockwell C37 hardness ensure it withstands extreme loads without stripping or shearing, while the hex drive facilitates easy access in confined spaces. Ideal for applications requiring robust, reusable fasteners, this screw delivers consistent performance in manufacturing, construction, and aerospace sectors where reliability and compliance with ASTM A574 standards are paramount.
Specification Summary & Compliance
This socket head cap screw features a 1/4"-20 UNC coarse thread with a Class 3A fit for precise dimensional accuracy, ensuring optimal thread engagement. It is manufactured in accordance with ASTM A574 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material integrity for industrial use.
