S-94414A382 5/16"-18 x 3/4" ASME B18.3, ASTM F835 Alloy Steel Torx Flat Head Screws

Key Features & Benefits at a Glance

• Superior torque transmission with Torx Plus IP40 drive system, preventing cam-out and tool damage during high-torque applications
• Exceptional strength and durability from alloy steel construction with 140,000 PSI tensile strength and Rockwell C39 hardness
• Reliable fastening performance through Class 3A thread fit and UNC coarse threading for secure connections in demanding environments
• Enhanced corrosion resistance provided by black-oxide surface treatment, extending service life in industrial settings
• Optimal flush mounting with standard 82° countersink angle and flat head design for smooth surface finishes
• Full-thread engagement ensuring maximum holding power across the entire 3/4" length
• Industry compliance assurance meeting ASME B18.3 specifications and environmental regulations

Professional Applications & Engineering Value

This 5/16"-18 UNC flat head screw with Torx Plus IP40 drive delivers exceptional engineering value in industrial fastening applications where vibration resistance and high torque requirements are critical. The black-oxide alloy steel construction provides superior protection against corrosion while maintaining the 140,000 PSI tensile strength needed for heavy-duty assemblies. The Class 3A thread fit ensures precise engagement with mating components, reducing the risk of cross-threading in production environments. With fully threaded design and coarse UNC threading, these screws offer rapid installation and reliable performance in machinery, equipment manufacturing, and structural applications where consistent clamping force is essential for operational safety and longevity.

Specification Summary & Compliance

This flat head screw features precise Class 3A thread fit with UNC coarse threading (5/16"-18) and standard 82° countersink angle. Manufactured to ASME B18.3 specifications where applicable per ASTM F835, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest industry standards for hazardous substance restrictions. The right-hand threaded fastener provides standard installation compatibility across industrial applications requiring high-strength, corrosion-resistant fastening solutions.