S-91205A246 10-24 x 7/8" ASME B18.3, ASTM A574 Alloy Steel Thread-Locking Socket Head Screws

Key Features & Benefits at a Glance

• Secure vibration-resistant fastening with integrated nylon patch thread locker that maintains performance across a wide temperature range (-70° to 250°F)
• Exceptional strength and durability from alloy steel construction with 170,000 psi tensile strength and Rockwell C37 hardness for heavy-duty applications
• Precise, reliable threading with Class 3A fit and coarse UNC thread spacing for easier assembly and superior resistance to loosening
• Corrosion-resistant black-oxide finish that protects against rust and extends service life in demanding industrial environments
• Optimized hex drive design with 5/32" drive size providing high torque capability and reduced risk of tool slippage
• Full compliance with industry standards including ASME B18.3 and ASTM A574, ensuring consistent quality and performance
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance for sustainable procurement

Professional Applications & Engineering Value

This black-oxide alloy steel socket head cap screw delivers critical performance advantages for industrial applications where vibration resistance and structural integrity are paramount. The combination of 170,000 psi tensile strength and Rockwell C37 hardness ensures reliable performance under extreme mechanical stress, while the nylon patch thread locker effectively prevents loosening in high-vibration environments such as machinery, automotive assemblies, and heavy equipment. The coarse UNC threading with Class 3A fit provides superior engagement and easier installation compared to fine-thread alternatives, reducing assembly time and improving manufacturing efficiency. The black-oxide surface treatment offers enhanced corrosion protection without compromising dimensional accuracy, making these socket head cap screws ideal for applications requiring both chemical resistance and precise fitment.

Specification Summary & Compliance

This 10-24 UNC socket head cap screw features precise Class 3A thread fit with coarse thread spacing and right-hand threading. Manufacturing specifications comply with ASME B18.3 and ASTM A574 standards, ensuring dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest requirements for hazardous substance restrictions and chemical safety in industrial applications.