S-90044A515 8-32 x 2 3/4" ASME B18.3, ASTM A574 Alloy Steel Socket Head Screws

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.
• Superior corrosion resistance provided by the black-oxide finish on alloy steel, extending service life in demanding industrial environments.
• Precise Class 3A thread fit guarantees secure, vibration-resistant connections, minimizing loosening in critical assemblies.
• Hex socket drive design allows for high-torque installation with standard tools, improving assembly efficiency and reducing strip-out.
• Fully threaded shank offers consistent engagement along the entire length, providing versatile fastening options and uniform load distribution.
• Compliance with ASME B18.3 ensures dimensional accuracy and interchangeability, simplifying procurement and replacement processes.
• RoHS 3 and REACH compliance confirms environmental and safety adherence, making them suitable for regulated industries and global supply chains.

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 8-32 thread socket head cap screws deliver robust performance in machinery, automotive, and aerospace assemblies. The black-oxide alloy steel construction provides excellent resistance to corrosion and wear, addressing common issues like rust-induced failure in humid or chemically aggressive environments. With a coarse UNRC thread and Class 3A fit, these fasteners ensure quick installation and reliable holding power, even under dynamic loads and vibrations. The hex drive facilitates easy access in confined spaces, while the high tensile strength and Rockwell C37 hardness prevent deformation under extreme pressures, making them ideal for critical structural connections where durability and precision are paramount.

Specification Summary & Compliance

This fastener adheres to ASME B18.3 specifications with precise Class 3A thread fit and UNRC coarse thread standards, ensuring dimensional consistency and reliable performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and regulated industrial applications.