S-90729A115 6-32 x 5/16" Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction and passivated finish, ideal for harsh environments and extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for reliable performance under high stress.
• Precision thread fit with Class 3A UNC coarse threads ensuring secure, vibration-resistant connections in industrial assemblies.
• Optimized flush installation featuring a 100° countersink angle and undercut flat head profile for a smooth, non-protruding finish.
• Efficient installation and removal with a 5/64" hex drive, providing positive torque transmission and reducing tool slippage.
• Full threading along the 5/16" length for maximum grip and holding power across the entire fastener engagement.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global markets.

Professional Applications & Engineering Value

Engineered for demanding applications, these 6-32 UNC flat head screws in 316 Stainless Steel address critical challenges in industrial settings where corrosion resistance and mechanical integrity are paramount. The passivated finish enhances surface durability, preventing oxidation in chemical, marine, or high-humidity environments. The Class 3A thread fit and coarse thread spacing provide superior clamping force and vibration resistance, reducing the risk of loosening in machinery, electronic enclosures, and structural assemblies. The combination of a 100° countersink angle and undercut head profile ensures a flush mount, eliminating protrusions that could interfere with moving parts or aesthetic requirements. With a hex drive for secure tool engagement, these screws streamline installation in confined spaces, making them a reliable choice for OEMs and maintenance teams seeking long-term fastener performance.

Specification Summary & Compliance

This flat head screw adheres to inch system dimensions, featuring a 6-32 UNC thread with Class 3A precision fit for consistent engagement. Manufacturing complies with industry standards for thread form and head geometry, including the specified head diameter tolerance of -0.01" to 0". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety requirements for industrial use.