S-91251A663 3/8"-16 x 3/8" 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 industrial applications, reducing failure risks.
• Corrosion-resistant black-oxide finish on alloy steel extends service life in demanding environments, minimizing maintenance needs.
• Precise Class 3A thread fit provides superior holding power and vibration resistance for secure assemblies.
• Hex socket drive design allows for easy installation in confined spaces with standard tools, improving efficiency.
• Coarse UNC threads enable quick assembly and disassembly, saving time in maintenance and production cycles.
• Full threading along the length offers versatile fastening options and consistent grip across the entire screw.
• High hardness (Rockwell C37) enhances durability and wear resistance, supporting long-term reliability.

Professional Applications & Engineering Value

This socket head cap screw is engineered with black-oxide alloy steel to address common industrial challenges like corrosion and mechanical stress. The 3/8"-16 UNC coarse threads with a Class 3A fit ensure tight, secure connections in machinery, automotive, and construction applications, reducing loosening from vibrations. Its hex drive design facilitates installation in tight spaces, while the high tensile strength and hardness provide resilience under heavy loads. Ideal for industrial fastening where reliability and compliance with standards are critical, this screw minimizes downtime and enhances assembly integrity in harsh conditions.

Specification Summary & Compliance

This product features precise inch system dimensions, including a thread size of 3/8"-16 UNC with Class 3A thread fit for accuracy. It meets ASTM A574 specifications for high-strength fasteners and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability in industrial use.