S-90044A145 3/8"-16 x 1 3/4" 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 critical applications.
• Superior corrosion resistance from the black-oxide finish extends service life in harsh industrial environments, minimizing maintenance and replacement costs.
• Precise Class 3A thread fit provides secure, vibration-resistant connections, enhancing assembly integrity and reducing loosening over time.
• High hardness rating (Rockwell C37) offers excellent wear resistance, maintaining thread integrity through repeated installations and removals.
• 5/16" hex drive design allows for easy installation with standard tools, speeding up assembly processes and improving workflow efficiency.
• Coarse UNRC threads enable quick engagement and reduced cross-threading risks, ideal for rapid production and maintenance tasks.
• Full compliance with ASTM A574, RoHS 3, and REACH ensures material consistency and environmental safety, meeting global regulatory requirements for industrial use.

Professional Applications & Engineering Value

This Black-Oxide Alloy Steel Socket Head Cap Screw is engineered to address common industrial challenges such as vibration-induced loosening and environmental degradation. The alloy steel construction combined with a black-oxide surface treatment provides robust protection against rust and wear, making it suitable for demanding applications in machinery, automotive assemblies, and heavy equipment. Its 3/8"-16 coarse threads and Class 3A fit ensure tight, reliable fastening in high-vibration environments, while the fully threaded design offers uniform load distribution. Ideal for industrial screws and high-strength fasteners, this component delivers consistent performance where precision and durability are critical, reducing downtime and maintenance costs.

Specification Summary & Compliance

This screw features precise Class 3A thread fit per UNRC standards, with a coarse 3/8"-16 thread size and 1-3/4" length. It meets ASTM A574 specifications for high-strength socket head cap screws, ensuring material and manufacturing consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable industrial use.