S-90044A157 3/8"-24 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 demanding applications.
• Precision Class 3A thread fit provides superior engagement and vibration resistance, maintaining secure connections in machinery and equipment.
• Black-oxide coating on alloy steel offers enhanced corrosion resistance, extending service life in harsh industrial environments.
• Fine UNRF threads allow for precise adjustments and improved load distribution, ideal for applications requiring exact alignment.
• Rockwell C37 hardness delivers excellent wear resistance, ensuring durability and reduced maintenance needs over time.
• Hex socket drive design enables easy installation with standard tools, minimizing assembly time and improving workflow efficiency.
• Full compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety, meeting global regulatory standards.

Professional Applications & Engineering Value

This black-oxide alloy steel socket head cap screw is engineered to address critical challenges in industrial fastening, such as vibration loosening and corrosion-induced degradation. The fine UNRF thread and Class 3A fit provide tight tolerances that prevent back-off in high-vibration settings like automotive assemblies, heavy machinery, and aerospace components. The alloy steel construction with a Rockwell C37 hardness ensures it withstands repetitive loads and harsh conditions, reducing downtime and replacement costs. Its black-oxide surface treatment adds a protective layer against moisture and chemicals, making it suitable for outdoor or corrosive environments. Ideal for precision applications requiring high tensile strength and reliability, this screw supports efficient maintenance and long-term operational stability in sectors from manufacturing to construction.

Specification Summary & Compliance

This product features precise 3/8"-24 UNRF fine threads with a Class 3A fit for accurate engagement, manufactured to ASTM A574 specifications for consistent quality. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and adheres to environmental regulations for safe use in global markets.