S-90220A150 5/16"-18 x 1" 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-strength performance with 70,000 psi tensile strength and Rockwell B70 hardness for demanding industrial applications
• Excellent thread engagement provided by the fully threaded UNC coarse thread design, ensuring secure fastening and vibration resistance
• Precise installation control via the external hex drive and hex head, allowing for high torque application and easy wrench access
• Pressure equalization capability through the vented head design (0.078" vent diameter), preventing pressure buildup in sealed assemblies
• Consistent quality and interchangeability guaranteed by Class 2A thread fit, meeting standardized dimensional requirements
• Environmental compliance assurance with RoHS 3 and REACH regulations, ensuring safe use in regulated industries

Professional Applications & Engineering Value

This 5/16"-18 UNC hex head screw delivers critical engineering solutions where corrosion resistance, high tensile strength, and reliable performance are non-negotiable. Manufactured from 18-8 Stainless Steel, it effectively combats rust and chemical degradation in demanding settings like marine equipment, food processing machinery, and outdoor structures. The fully threaded coarse thread design ensures maximum grip and load distribution, reducing the risk of loosening under vibration. The vented head is particularly valuable in pressurized or sealed systems, allowing air or moisture escape to prevent corrosion traps or assembly failures. With its external hex drive and standardized Class 2A thread fit, it supports efficient installation and replacement in high-volume industrial maintenance and OEM production lines.

Specification Summary & Compliance

This screw features a 5/16"-18 UNC coarse thread with Class 2A thread fit for consistent dimensional accuracy and interchangeability. It is fully threaded and measures 1" in length with a hex head width of 1/2". The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets strict environmental and safety standards for industrial use.