S-90585A622 3/8"-16 x 3/4" ASME B18.3 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 chemical exposure
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty industrial applications
• Precision thread engagement featuring Class 3A thread fit and UNC coarse threads for reliable fastening in demanding conditions
• Optimal flush mounting with standard 82° countersink angle and flat head design for smooth surface finishes
• Enhanced installation efficiency through hex drive design providing secure tool engagement and torque transmission
• Full thread coverage along the entire 3/4" length ensures maximum grip and load distribution
• Regulatory compliance assurance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

These 316 Stainless Steel flat head screws deliver exceptional performance in corrosive and high-stress environments where fastener failure is not an option. The combination of Class 3A thread fit and UNC coarse threading provides superior vibration resistance and quick assembly in industrial equipment, marine hardware, and chemical processing systems. The passivated finish enhances the natural corrosion resistance of 316 stainless steel, making these hex drive screws ideal for applications requiring frequent maintenance or exposure to moisture, chemicals, and extreme temperatures. The 82° countersink angle ensures proper seating in standard chamfered holes, creating flush surfaces critical for machinery, structural components, and precision assemblies where protrusion cannot be tolerated.

Specification Summary & Compliance

Manufactured to exacting ASME B18.3 specifications with Class 3A thread fit tolerance for precision engagement. Features 3/8"-16 UNC coarse threads with right-hand direction and full threading along the 3/4" length. The 316 Stainless Steel construction provides Rockwell B55 hardness and 70,000 psi tensile strength. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. The hex drive accepts standard 7/32" tools for consistent installation torque.