S-92235A503 4-40 x 1/2" Flanged Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 140,000 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, minimizing loosening in machinery and equipment
• Black-oxide surface treatment on alloy steel offers enhanced corrosion resistance and durability in industrial environments
• Full threading design allows for maximum grip length and uniform load distribution across the entire fastener
• Hex socket drive enables high-torque installation and removal while maintaining a low-profile head design
• Coarse UNC threading facilitates quick assembly and disassembly, improving maintenance efficiency
• Comprehensive compliance with RoHS 3 and REACH regulations ensures environmental responsibility and global market acceptance

Professional Applications & Engineering Value

These 4-40 UNC thread socket head cap screws deliver exceptional engineering value in precision applications where space constraints and high strength requirements coexist. The black-oxide alloy steel construction provides superior corrosion resistance while maintaining the 140,000 psi tensile strength necessary for critical assemblies. The Class 3A thread fit ensures precise engagement in tapped holes, eliminating play and reducing vibration-induced loosening in machinery, automation systems, and electronic enclosures. The combination of coarse threading and hex socket drive allows for efficient installation in confined spaces while providing the torque capability needed for secure fastening. These fully threaded screws distribute clamping force evenly, making them ideal for applications requiring consistent pressure across the entire fastener length.

Specification Summary & Compliance

This socket head cap screw features precision 4-40 UNC coarse threads with Class 3A fit for superior dimensional accuracy. Manufactured from high-strength alloy steel with Rockwell C39 hardness, it delivers consistent performance in inch-system applications. The product complies with RoHS 3 (2015/863/EU) with exemption 6(a) for lead as an alloying element in steel and meets REACH (EC 1907/2006) requirements, ensuring regulatory compliance for industrial and commercial use worldwide.