S-91864A051 12-24 x 1 1/2" ASTM A574 Alloy Steel Socket Head Screws

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 in demanding applications.
• Class 3A thread fit provides superior precision and tighter tolerances for secure, vibration-resistant assemblies in critical machinery and equipment.
• Black-oxide coating on alloy steel offers enhanced corrosion resistance and durability, extending service life in harsh industrial environments.
• Partially threaded design with 1" minimum thread length allows for controlled engagement and easy alignment, improving installation efficiency and joint integrity.
• 5/32" hex drive socket head enables high-torque application with standard tools, minimizing stripping and ensuring consistent fastening in confined spaces.
• Compliance with ASTM A574, RoHS 3, and REACH standards guarantees material quality and environmental safety, meeting global regulatory requirements for industrial use.
• Coarse UNC thread profile facilitates quick assembly and disassembly, reducing downtime in maintenance and repair operations.

Professional Applications & Engineering Value

This 12-24 UNC thread socket head cap screw is engineered to address common industrial challenges such as vibration loosening and corrosion in heavy-duty applications. The black-oxide alloy steel construction, combined with a Rockwell C37 hardness, provides excellent wear resistance and structural integrity, making it ideal for use in automotive assemblies, machinery frames, and precision equipment. The coarse thread and Class 3A fit ensure secure fastening in dynamic environments, while the partially threaded rod design allows for optimal clamp load distribution. By integrating high tensile strength and standardized hex drive compatibility, this fastener simplifies maintenance and enhances reliability in sectors like manufacturing, aerospace, and construction, where durability and compliance with ASTM A574 are critical.

Specification Summary & Compliance

This product adheres to precise dimensional standards, including a Class 3A thread fit for tight tolerances and a UNC coarse thread profile. It meets ASTM A574 specifications for material and manufacturing quality, ensuring consistent performance. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial applications without hazardous substances.