S-91251A256 10-24 x 2 3/4" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi for reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
• Class 3A thread fit ensures precise, tight engagement for secure fastening in critical assemblies, minimizing loosening under vibration.
• Black-oxide coating on alloy steel provides enhanced corrosion resistance, extending service life in harsh environments without compromising structural integrity.
• Partially threaded design with 10-24 UNRC coarse thread allows for easy alignment and quick installation, saving time during assembly processes.
• Rockwell C37 hardness offers excellent wear resistance and durability, maintaining thread integrity over repeated use.
• Hex socket drive (5/32") enables high-torque application with standard tools, preventing stripping and ensuring efficient installation.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees adherence to industry standards and environmental regulations, ensuring safety and reliability for global supply chains.

Professional Applications & Engineering Value

These 10-24 thread Black-Oxide Alloy Steel Socket Head Cap Screws are engineered to address common industrial challenges, such as vibration-induced loosening and corrosion in demanding environments. The alloy steel construction combined with a black-oxide surface treatment provides superior protection against rust and wear, making them ideal for machinery, automotive, and aerospace applications where durability is critical. The coarse UNRC thread and Class 3A fit ensure quick, secure fastening with minimal effort, reducing assembly time and maintenance costs. With a high tensile strength of 170,000 psi and Rockwell C37 hardness, these screws withstand heavy loads and repetitive stress, offering long-term reliability in industrial screw systems and precision equipment.

Specification Summary & Compliance

This product features precise Class 3A thread fit and 10-24 UNRC coarse thread specifications, ensuring dimensional accuracy and compatibility with standard components. Manufactured in accordance with ASTM A574 for consistent quality and performance, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible and safe industrial use.