S-91251A199 8-32 x 1" 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 industrial applications, reducing the risk of fastener failure.
- Black-oxide coating on alloy steel provides enhanced corrosion resistance, extending service life in demanding environments.
- Class 3A thread fit offers superior precision and consistent engagement, minimizing assembly issues and improving joint integrity.
- Fully threaded design allows for maximum grip and uniform load distribution along the entire length, ideal for secure fastening.
- Hex socket drive (9/64") enables high torque application and easy installation in confined spaces, boosting efficiency.
- Rockwell C37 hardness ensures excellent wear resistance and durability under repetitive use, lowering maintenance needs.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety, meeting global regulatory standards.
Professional Applications & Engineering Value
This 8-32 UNC thread socket head cap screw is engineered to address critical challenges in industrial assembly, such as vibration resistance and long-term reliability. Made from black-oxide alloy steel, it combats corrosion in harsh settings like machinery, automotive, and electronics, where exposure to moisture and chemicals is common. The coarse UNC thread and Class 3A fit ensure quick, secure fastening with minimal cross-threading, reducing downtime. Its fully threaded and high-strength design provides uniform clamping force, essential for heavy-duty applications, while the hex drive allows for efficient installation in tight spaces, enhancing productivity and assembly precision.
Specification Summary & Compliance
This fastener adheres to precise dimensional standards, including UNC coarse threads with a Class 3A thread fit for tight tolerances and consistent performance. It meets ASTM A574 specifications for high-strength socket head cap screws, ensuring material and manufacturing consistency. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming it is free from hazardous substances and suitable for global industrial use.
