S-90220A140 5/16"-18 x 3/4" Vented Hex 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.
• High mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for demanding, heavy-duty applications.
• Efficient installation and venting through the fully threaded design and 0.078" vent diameter, preventing pressure buildup and easing assembly.
• Reliable coarse thread engagement with UNC thread and Class 2A fit, ensuring quick, secure fastening in various materials.
• Easy drive compatibility featuring an external hex head (1/2" width) for standard wrench use, reducing tooling complexity.
• Environmental compliance assurance meeting RoHS 3 and REACH standards, supporting sustainable and safe industrial practices.
• Consistent dimensional accuracy with precise thread diameter (0.3125") and length (3/4"), enabling uniform performance across batches.

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 18-8 Stainless Steel hex head screws address critical challenges like corrosion, high stress, and pressure management. The fully threaded UNC coarse thread design ensures maximum grip and load distribution in metals, plastics, and composites, reducing the risk of loosening under vibration. The integrated venting feature (0.078" diameter) is essential for applications requiring pressure equalization, such as in enclosures or fluid systems, preventing seal failure. With a tensile strength of 70,000 psi and Rockwell B70 hardness, these screws provide durable fastening solutions for machinery, automotive, and construction sectors where mechanical integrity and corrosion resistance are paramount. The external hex drive allows for high-torque installation, streamlining maintenance and assembly processes in time-sensitive environments.

Specification Summary & Compliance

This screw adheres to UNC coarse thread standards with a Class 2A thread fit for consistent dimensional accuracy and reliable engagement. Key specifications include a thread size of 5/16"-18, length of 3/4", and head dimensions of 13/64" height and 1/2" width. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety requirements for industrial use.