S-93235A110 4-40 x 1/2" Vented Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and long-term reliability.
• Exceptional tensile strength of 70,000 PSI and Rockwell B70 hardness for high-stress applications and reduced risk of fastener failure.
• Precise Class 3A thread fit ensures tighter tolerances and secure, vibration-resistant connections in critical assemblies.
• Vented design allows for pressure equalization or fluid passage, preventing seal damage in pneumatic or hydraulic systems.
• Standard hex socket drive (3/32") provides high torque capability and easy installation in confined spaces with common tools.
• Fully threaded UNC coarse thread offers quick assembly and strong holding power in a variety of materials.
• Full compliance with RoHS 3 and REACH regulations ensures environmental safety and meets international supply chain requirements.

Professional Applications & Engineering Value

This 4-40 UNC Socket Head Cap Screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and high mechanical stress. The 18-8 Stainless Steel material provides excellent resistance to rust and chemical exposure, making it suitable for outdoor equipment, marine applications, and food processing machinery. The Class 3A thread fit and coarse threading ensure reliable engagement in metals and plastics, reducing the risk of cross-threading and maintaining clamp load under dynamic conditions. The vented feature is particularly valuable in enclosed systems where pressure differentials could compromise performance, offering a practical solution for pneumatic controls and fluid handling assemblies. Its right-hand thread and fully threaded design enable efficient installation and consistent fastening across automated or manual production lines.

Specification Summary & Compliance

This screw adheres to UNC thread standards with a Class 3A thread fit for precision dimensional accuracy. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances. The specifications include a thread size of 4-40, length of 1/2 inch, and a drive size of 3/32" hex, providing consistent performance in industrial fastener applications.