S-92805A723 3/8"-16 x 3/4" ASME B18.3, ASTM F879, MIL-DTL-18240 Stainless Steel Thread-Locking Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Permanent vibration resistance with Nylon patch thread locker that maintains secure fastening from -65° to 250° F, preventing loosening in dynamic environments
• Superior corrosion resistance thanks to 18-8 Stainless Steel construction, ideal for harsh industrial and outdoor applications
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under heavy loads
• Precise thread engagement with Class 3A fit and UNC coarse threading ensuring consistent, reliable fastening in various materials
• Optimized flush mounting featuring standard flat head profile with 82° countersink angle for seamless surface integration
• Easy installation and removal with hex drive (7/32") design providing superior torque transmission and tool access
• Full thread coverage along the entire 3/4" length for maximum grip and load distribution

Professional Applications & Engineering Value

This 3/8"-16 UNC flat head screw with Nylon patch locking technology addresses critical vibration-induced loosening in industrial machinery, automotive assemblies, and structural frameworks. The 18-8 Stainless Steel composition provides excellent corrosion resistance for demanding environments including marine applications, chemical processing equipment, and outdoor infrastructure. The Class 3A thread fit ensures precise engagement in both metallic and composite materials, while the coarse UNC threading facilitates rapid assembly in production environments. The combination of 70,000 psi tensile strength and permanent thread locking capability makes this fastener ideal for applications where safety and reliability are paramount, eliminating the need for secondary locking mechanisms and reducing maintenance intervals.

Specification Summary & Compliance

Manufactured to exacting dimensional standards with Class 3A thread fit and UNC coarse threading (3/8"-16). Fully compliant with ASME B18.3, ASTM F879, and MIL-DTL-18240 specifications. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) requirements. Features standard 82° countersink angle and fully threaded design for optimal performance in industrial fastening applications.