S-90128A714 1/2"-13 x 1 1/4" 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 the risk of fastener failure.
• Zinc-plated alloy steel construction provides superior corrosion resistance, extending service life in harsh environments.
• Class 3A thread fit offers precise, tight tolerances for secure fastening and vibration resistance in machinery assemblies.
• Coarse UNC threads enable quick and easy installation, saving time in production and maintenance workflows.
• 3/8" hex drive design allows for high-torque application with standard tools, minimizing slippage and improving efficiency.
• Full threading along the 1-1/4" length ensures uniform load distribution and versatile grip in various material thicknesses.
• Rockwell C37 hardness enhances durability and wear resistance, supporting long-term use in demanding conditions.

Professional Applications & Engineering Value

These zinc-plated alloy steel socket head cap screws are engineered to address common industrial challenges, such as vibration loosening and corrosion in heavy machinery. The UNC coarse thread design facilitates rapid assembly in structural applications, while the Class 3A thread fit ensures consistent clamping force, critical for maintaining integrity in automotive, aerospace, and manufacturing equipment. With a 170,000 psi tensile strength and robust alloy steel core, they provide reliable fastening solutions that withstand extreme loads and environmental exposure, reducing maintenance downtime and enhancing operational safety.

Specification Summary & Compliance

This product adheres to ASTM A574 specifications, featuring precise Class 3A thread tolerances and UNC coarse thread standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability for global industrial use.