S-92949A443 5/16"-18 x 5/16" Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Superior load-bearing capability thanks to 70,000 psi tensile strength for heavy-duty applications
• Precise, reliable fastening ensured by Class 3A thread fit, minimizing loosening under vibration
• Enhanced durability with Rockwell B55 hardness, resisting wear and deformation
• Easy installation and removal with 3/16" hex drive, providing secure tool engagement
• Versatile coarse threading (UNC) for quick assembly in various materials
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe industrial use

Professional Applications & Engineering Value

These 5/16"-18 UNC rounded head hex drive screws are engineered to address critical challenges in industrial assembly, such as vibration resistance and corrosion in demanding settings. The 18-8 stainless steel material offers excellent protection against rust and chemical exposure, while the fully threaded design and Class 3A thread fit provide consistent clamping force, reducing the risk of joint failure. With a coarse thread and right-hand threading, they enable rapid installation in machinery, automotive, and construction applications, ensuring reliable performance under high-stress conditions. The button head style and rounded profile minimize protrusion, enhancing safety and aesthetics in visible assemblies.

Specification Summary & Compliance

This screw features precise dimensions including a 5/16"-18 UNC thread size with Class 3A thread fit for tight tolerances, a head diameter of 0.547", and a length of 5/16". It adheres to standard threading specifications and is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory alignment for industrial use.