S-92235A502 4-40 x 3/8" Flanged Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 140,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the black-oxide finish extends service life in harsh environments, minimizing maintenance and replacement costs.
• Precision Class 3A thread fit guarantees tight, secure fastening with minimal play, ideal for assemblies requiring exact tolerances.
• Fully threaded design provides consistent holding power along the entire length, enhancing grip and stability in various materials.
• Hex socket drive (3/32") allows for high-torque installation with standard tools, facilitating efficient assembly and disassembly.
• Robust alloy steel construction with Rockwell C39 hardness offers excellent wear resistance and durability under repetitive loads.
• Compliance with RoHS 3 and REACH standards ensures environmental safety and regulatory adherence for global supply chain integration.

Professional Applications & Engineering Value

This 4-40 UNC Socket Head Cap Screw is engineered to address critical challenges in precision machinery, automotive, and aerospace sectors where vibration resistance and long-term reliability are paramount. The black-oxide alloy steel material combats corrosion effectively, reducing downtime in humid or chemically aggressive settings. Its coarse thread spacing and Class 3A fit enable quick, secure fastening in metals and composites, preventing loosening under dynamic loads. The flanged design distributes clamping force evenly, protecting sensitive components from damage. Ideal for industrial applications requiring high-strength, corrosion-resistant fasteners, it ensures consistent performance in assembly lines, robotics, and heavy equipment.

Specification Summary & Compliance

This screw adheres to UNC thread standards with a Class 3A fit for precise dimensional accuracy. It features a right-hand thread direction, fully threaded rod type, and key dimensions including a 3/8" length and 1/4" flange diameter. Manufactured from alloy steel with a tensile strength of 140,000 psi and Rockwell C39 hardness, it complies with RoHS 3 (2015/863/EU) under exemption 6(a) and REACH (EC 1907/2006) standards, ensuring environmental and safety regulations are met.