S-98511A251 4-40 x 5/8" Aluminum Socket Head Screws

Key Features & Benefits at a Glance

• High-Strength 7075 Aluminum Construction: Offers superior durability and corrosion resistance compared to standard aluminum alloys, ensuring long-term reliability in demanding environments.
• Precision Class 3A Thread Fit: Provides tighter tolerances for secure, vibration-resistant assemblies, reducing the risk of loosening in high-stress applications.
• 3/32" Hex Drive Socket Head: Enables easy installation and removal with standard hex tools, minimizing stripping and improving maintenance efficiency.
• Fully Threaded UNC Coarse Design: Ensures maximum grip and holding power along the entire length, ideal for components requiring uniform clamping force.
• RoHS 3 and REACH Compliance: Meets stringent environmental regulations, making these screws safe for use in industrial and commercial sectors without hazardous substances.
• Right-Hand Thread with Standard Socket Profile: Simplifies assembly processes and ensures compatibility with common fastening systems, reducing installation time.
• Lightweight Yet Robust Build: Combines the weight savings of aluminum with the strength needed for precision engineering applications, enhancing overall system performance.

Professional Applications & Engineering Value

Engineered for precision-driven industries, these 7075 aluminum socket head cap screws address critical needs in applications where weight reduction, corrosion resistance, and reliable fastening are paramount. The 4-40 UNC coarse thread and Class 3A fit ensure minimal backlash and superior vibration resistance, making them ideal for aerospace, electronics, and machinery assemblies. The fully threaded design distributes load evenly, preventing joint failure in dynamic environments. With a 3/32" hex drive, installation is streamlined, reducing labor costs and tool wear. Compliant with RoHS and REACH standards, these fasteners support sustainable manufacturing without compromising on industrial-grade performance.

Specification Summary & Compliance

This socket head cap screw adheres to UNC thread standards with a Class 3A thread fit for high precision. Dimensions include a 5/8" length, 4-40 thread size, and coarse thread spacing. It is manufactured from 7075 aluminum and features a standard socket head profile with a right-hand thread direction. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring environmental safety for industrial and commercial use.