S-90044A518 10-24 x 2 1/4" 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 under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance from the black-oxide finish on alloy steel extends service life and maintains integrity in harsh industrial environments.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies, minimizing loosening over time.
• High hardness rating (Rockwell C37) offers excellent wear resistance, maintaining thread integrity through repeated use and installation.
• Standard hex drive design with 5/32" drive size allows for easy installation and removal with common tools, improving assembly efficiency.
• Coarse UNRC right-hand threads enable quick engagement and disassembly, speeding up maintenance and reducing downtime.
• Full threading along the 2-1/4" length ensures consistent clamping force distribution and flexibility in various material thicknesses.

Professional Applications & Engineering Value

This black-oxide alloy steel socket head cap screw is engineered to address critical challenges in heavy-duty industrial settings, where vibration, corrosion, and high tensile loads can compromise fastener integrity. The 10-24 coarse thread with Class 3A fit provides superior resistance to loosening in dynamic environments, making it ideal for machinery, automotive assemblies, and structural applications. The socket head design with a standard hex drive ensures secure tool engagement, reducing slippage and damage during installation. Combined with the protective black-oxide coating, this fastener delivers long-term reliability in corrosive conditions, supporting efficient maintenance and reducing replacement frequency in industrial fastening systems.

Specification Summary & Compliance

This socket head cap screw features precise inch system measurements, including a 10-24 thread size with UNRC coarse threads and Class 3A fit for high accuracy. It complies with ASME B18.3 specifications and is manufactured per ASTM A574 standards. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations for industrial use.