S-93791A424 3/8"-16 x 1" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and black-oxide passivated finish for long-term reliability in harsh environments
• Superior load-bearing capability thanks to 70,000 psi tensile strength and Rockwell B55 hardness for demanding industrial applications
• Precise thread engagement with Class 3A thread fit ensuring secure fastening and vibration resistance in critical assemblies
• Efficient installation and removal through hex drive design and fully threaded shaft for quick assembly and disassembly operations
• Optimal flush mounting with standard 82° countersink angle and flat head profile for seamless surface integration
• Reliable standardization meeting ASME B18.3 specifications for consistent performance across industrial applications
• Environmental compliance assurance with RoHS 3 and REACH compliance for sustainable manufacturing and global market acceptance

Professional Applications & Engineering Value

These 3/8"-16 UNC flat head screws deliver exceptional engineering value for industrial applications requiring both strength and corrosion resistance. The 18-8 stainless steel core material combined with the black-oxide passivated finish provides superior protection against oxidation and chemical exposure, making them ideal for machinery, automotive, and marine applications where environmental factors compromise fastener integrity. The Class 3A thread fit and coarse thread spacing ensure rapid installation while maintaining vibration resistance in high-stress assemblies. The hex drive design allows for high-torque application without slippage, while the fully threaded configuration provides maximum grip length for secure fastening in various material thicknesses. These features collectively address common industrial challenges including assembly efficiency, maintenance accessibility, and long-term reliability in demanding operating conditions.

Specification Summary & Compliance

This flat head screw features precise Class 3A thread fit with UNC coarse thread spacing and maintains dimensional accuracy per ASME B18.3 manufacturing standards. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across global markets. Thread specifications include 3/8"-16 UNC right-hand threading with standard 82° countersink angle for proper flush mounting applications.