S-92205A239 5/16"-18 x 1 1/4" Sealing Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and extended service life
• Reliable high-pressure sealing up to 20,000 psi thanks to the integrated silicone rubber O-ring, preventing leaks in critical applications
• Exceptional temperature tolerance from -80° to 400°F, ensuring performance stability in extreme thermal conditions
• High tensile strength of 80,000 psi and Rockwell B85 hardness for dependable load-bearing capacity and resistance to deformation
• Precise Class 2A thread fit and UNC coarse threading for easier assembly, reduced cross-threading risk, and consistent fastening
• Full threading design provides uniform grip along the entire length, enhancing connection integrity in various material thicknesses
• External hex drive and hex head allow for straightforward installation with standard tools, improving assembly efficiency

Professional Applications & Engineering Value

This 5/16"-18 UNC hex head screw is engineered to address critical challenges in industrial settings where pressure integrity and environmental resistance are paramount. The 18-8 Stainless Steel material offers excellent corrosion resistance, making it suitable for applications in chemical processing, marine equipment, and outdoor machinery. The inclusion of a silicone rubber O-ring ensures a secure seal against fluids and gases, effectively solving leakage issues in hydraulic systems, pumps, and pressurized containers. With its coarse thread and Class 2A fit, it facilitates quick and reliable installation, reducing downtime in assembly lines. Fully threaded and built for high-pressure environments up to 20,000 psi, this screw delivers consistent performance in demanding sectors like oil and gas, automotive manufacturing, and heavy machinery, where durability and safety are non-negotiable.

Specification Summary & Compliance

This product adheres to UNC coarse thread standards with a Class 2A thread fit for precise dimensional accuracy and reliable fastening. It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and restricted substance control. The specifications include a thread size of 5/16"-18, length of 1-1/4", and full threading, supporting consistent performance across industrial applications.