S-92210A640 3/8"-24 x 3/4" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments
• Exceptional thread precision with Class 3A fit and UNF fine threading ensures reliable, vibration-resistant connections
• High mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
• Efficient installation with hex drive design providing secure tool engagement and reduced cam-out risk
• Optimal flush mounting with standard 82° countersink angle and flat head profile for smooth surface finishes
• Full threading coverage across the 3/4" length maximizes grip and load distribution in assembled components
• Regulatory compliance meets ASME B18.3 standards and environmental directives including RoHS 3 and REACH

Professional Applications & Engineering Value

This 18-8 stainless steel flat head screw with 3/8"-24 UNF fine threading is engineered to address critical industrial challenges where corrosion resistance, high tensile strength, and precise thread engagement are paramount. The passivated finish enhances durability in moist or chemical-exposed environments, preventing premature failure. Its Class 3A thread fit and hex drive design ensure secure fastening in high-vibration machinery, automotive assemblies, and precision equipment. The 82° countersink allows for seamless flush installation in metal fabrications and structural frameworks, reducing stress concentrations. Ideal for aerospace, marine, and manufacturing sectors, this screw delivers reliable performance under heavy loads while maintaining compliance with rigorous industry standards.

Specification Summary & Compliance

This product features precise Class 3A thread fit per UNF standards, ensuring tight tolerances and reliable performance. Manufacturing adheres to ASME B18.3 specifications, with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The screw is fully threaded with a fine thread spacing, and all dimensional attributes—including head diameter, length, and countersink angle—are controlled to meet industrial application requirements.